Teamfearless, I think it would be very useful to first of all make a good market research in your country about whether people are willing to use
BTC ATMs, and what fee they are willing to pay for it. It is also very important to study all country's tax laws and what is the status of your country in relation to cryptocurrency.
Business with ATMs certainly can be profitable, but you must have a good user base who regularly use such services. Also you should not exaggerate with the fees, 5-6% of each transaction should be quite enough for you.
You can find more information about manufacturers on this link :
Bitcoin ATM Manufacturers