You've got me sold :) How old are your kids? (mine 1, 3 and 19...). If you want to make some quick money you should take out a life insurance on me just before I explain the plan to my s.o.
To be honest, Kigali is one of the easiest places to do this in Africa (if not the easiest) when looking at all factors, so we are bit spoiled in that regard. I was surprised, when talking this over with my wife she was on board right from the beginning and even moved here sight-unseen. So, I'm grateful for that. Having kids also adds the extra hurdles of finding schools and such, but nothing too difficult.