Why bother. Best vehicle for African roads is a Toyota 4wd Minivan HIACE. They are already there so an infrastructure as in thousands of vans, extra parts, mechanics, etc. I have gone on safari in them, Land Cruisers, Mitubishi (sp?), and Defenders. Add the pop top option and instant viewing for critters.
Problem with the defender is spare parts.
I'm contemplating thinking about thinking about it!