That would be a great decision that you have chosen cryptocurrency for investment. However, before you start with your plan, I would suggest that you need to familiarize first and study the market trend of cryptocurrency either be altcoins or btc. Knowledge is very important when you invest in cryptos, therefore you should have atleast the basic knowledge. I think that your $4k capital is already a big money and I think it would be better to consider long term investment for bitcoin since I am confident as anybody else that it will make a huge pump in the coming months.

Newbie is recommended is just to hold bitcoin and learn how to trade on tradingview site from people analysis.
And try 10% of assets when ready to trading with short trade.

I think bitcoin is the best and the most probable investment till date and on the other hand it is very sensitive kind of investment, it needs very wisdom of yours while investing and the best advice anyone can advise about bitcoin that one needs to be little bit patience and should be very much precise and wise while investing and by this I mean is that you should know when is the best time to buy and to hold your coins and then wait till the next inflation, this is the only required in bitcoin investment.