simple answer IMHO is that there is no best license for afrika- because afrika is not one country... right? right.
So you have many different operators in many different countries operating under different Aviation administering bodies... ie differing rules, and requirements.
So, choose your preferred (or possible) operator(s)/country(s) and talk to them directly and find out what you need, then go out and get it. And then get yourself there.
Best of luck
HJ