Your investment plan is indeed good. Because you already know about safe wallet storage (Electrum) and you also have a capital accumulation plan to invest well. However, I will remind you of some advice, namely don't forget to use cold money to invest in Bitcoin. Because this will make it easier for you to make your bitcoin investment. Because if for example you use hot capital, this will really disturb your psychology when investing in Bitcoin. Apart from that, you also have to continue to learn a lot about other things related to bitcoin investment. Because if you study Bitcoin half-heartedly or incompletely, it is feared that it will also have a bad impact on the course of your investment.

And final advice, when you decide to invest in bitcoin, you must have a definite intention or target. As is the case with the selling price you want to aim for. Because if you don't have an initial intention like that, it is feared that it will make you confused when you want to take profits or when you want to sell your bitcoin assets. However, if you already have a clear intention or target, I am sure you will be more mature when you want to sell the bitcoin assets you own. For this reason, having an intention or target is necessary when investing in bitcoin.

Sounds like a good plan, but one thing I could advise you - is to continue learning how to make yourself secure from scams/hacks and don't be too complacent with what you're used to. Remember, huge bag attracts a lot of scammers. Though Electrum is one of the secure non custodial wallet, IF used with extra care, but there are several options to make it more secure as your bitcoin grows each time you DCA in a monthly basis.
Also, you need to be careful in buying as well, make it sure that bitcoin has to pull back a little bit against the monthly high for you to maximize your profit during bull season. 
$100-$200 in a month is quite a decent amount and that for sure will multiply in the next 3-5 years. Just don't rush things, plan it out for long term or you can even treat bitcoin investment as part of your retirement plan.

Although, electrum is considered the best wallet after hardware wallets, we also need to remember that it is an online wallet and it will have risks that we cannot predict. I still remember the story of julerz12's Electrum wallet being hacked earlier this year, and it was a lesson that using software wallets on devices that are connected to the internet is very risky. In my opinion, people with investments of over 1,000 USD or more should own a hardware wallet to ensure the safety of their bitcoins. Owning a hardware wallet like Trezor is not expensive, we should not hesitate or hesitate to own it if we are serious about our bitcoins.

Yes, the right wallet choice for storing your assets, the technique you want to try to invest in a month is the dca technique, this technique is quite good, because this technique will take the average value of all your assets. But you need to remember that there is another technique, namely the lump sum, this technique is usually used by people who are experienced in investing or rich people out there, this technique is an activity of investing funds at once in a certain time, this technique can produce quite high returns as long as the timing in purchasing assets is right. Yes, of course, in investing you will be ready to face unexpected things or challenges because prices fluctuate a lot, use the money you are ready to lose in your investment.

Thanks, dear JoyMarsha, I did not get any mention of the OP's quotation due to the wrong use of quote tags, but got a mention notification due to your noticing. Thanks for that.

And dear Kalihunter, if that's the case then you should definitely do a lump sum with the current $1500 you have now, and with your monthly earnings savings, you can do DCA. But I will suggest you not go all in once with your $1500 I know that's what Lump sum means but in my opinion, the market might make some corrections so it would be best to take advantage of that otherwise if your intentions are to hold for longer period of time then it does not matter that much that if you buy now by lump sum or not because after 1 year you will be making profit and that's for sure but please DYOR (do your own research).

If you can put $100 to $200 every month then you can easily get your hands on a hardware wallet. Electrum wallet is the best out there on its respective category as a software wallet but when it comes to maximum security to your assets you should always consider having a hardware wallet. It's not super expensive. Some hardware wallets start from $50 to $100. I think you can always spare one month worth of invest into buying a hardware wallet. It's a one-time investment but it will keep your assets safe for the rest of your investment plan.

You may end up investing less for a month but do you want to end up losing everything? Electrum wallet has its own reputation for being the most secured software wallet. But that doesn't mean that it is immune to hack. When is related to online, anything could happen at any time if the right person chooses to do it. So keeping your privacy and accept safe should be your first concern. Choosing only BTC is a great idea but also remember that you will have to hold for a longer period of time. Not one or two year it could take 4 to 5 even 6 years. So choose wisely before you keep your assets somewhere.

I was writing the post and you just posted that you have already ordered it. But you can read this to understand how much privacy and safety means to people who are into cryptocurrency. It is a must and hardware wallet is the best for this reason.

Have you started doing these $200 per month dude plans? This is a huge amount, at least for an investor who is going to do a DCA for Bitcoin. And assuming that bitcoin makes $100 000 each, it's not bad because it's actually a big return.

I hope all communities have the ability to do DCA like that. Maybe the source of income that you have is good anyway. If you are capable of doing that, that's fine with what you are planning. But if we can only save a small amount of bitcoins for someone like me that I can't or that I'm not capable of saving such an allocation for bitcoins every month with the amount of expenses, then I do another cryptocurrency with DCA, for that matter.

Glad to know many more people are aware of this and getting into Bitcoin investment based on their own awareness.
Basically, yes, the electrum wallet is much better than storing it in the exchange, moreover it is for investment.
Keep private your keys and don't tell other people around you about your current investment, be safe of your assets. Crimes will be around you if you tell it to everyone around you. Just watch out.

It doesn't matter how big or small you invest in Bitcoin. The most important thing is that this amount is the amount that you can afford to loose for investment. So, whatever the conditions, you can hold it until the target price you want is reached. because the market will always make you feel uncertain feelings.

As you have choose electrum wallet for saving the amount of bitcoin that you have brought so its a good and safe wallet. Your other plan of investing in bitcoin according to your salary then it's also a good option because lots of people save large amount at once but when they needs money then they don't have a single penny.

Every person invest that amount which is affordable for him so on monthly basis may be 100$ or 200$ is affordable for you that's why you choose such amount for saving in bitcoin. No one should be in worried about bitcoin investment because it make your hopes stronger and make you able to get huge return and make your living style better than previous and present age. Once a person starts investment then he has more interest to put more money and gain more profit but think about your salary and expenses then use affordable amount into bitcoin if possible.