Yes exactly like I have been thinking. If I did buy and later sell without much fuss the cost of my transport would be $1,000 on the higher side.
I would say rent and hire a local driver.
In most countries, an American is going to be unprepared for how they drive there. Leave that up to someone you know.
Nairobi is one of the few African cities on a par with those in the West.
And if you have time, tour the Serengeti. Its one of the truly unforgettable sights of wild Africa.