It depends actually because on any investment or business do have corresponding things to be considered always like population or people who
do make use or aware on bitcoins existence where these atm's would be relevant to be placed into that area and also with governments
regulation towards it.Checking it first before rushing up into things is always been important.
I don't think that's the right way to look at this situation. The OP clearly stated that people in his/her country - that is either Ghana, Kenya, Nigeria, South Africa, or Zimbabwe - are quite used to having Bitcoin in their daily life. So, it is obvious that they do aware of Bitcoin, and that Bitcoin is indeed popular in the country. I think the OP is trying to figure out the solution on the technical problem which would appear sooner or later if he/she did set up a Bitcoin ATM.