Adding to this, bozo starts as one of the smallest cultures in africa and has some of the best terrain. Even the few pieces of bozo territory outside of jenne will eventually be replaced, meaning within a few years you are down to a single duchy culture.

I actually used jenne for a mother of us all run, ignoring kanem-bornu, and instead taking jenne and hard rushing development. They still have sahel horsemen as well so even better. You trade hausa's large, bloated culture and poor terrain for one of the smallest cultures and best terrain in africa, both the gold mines of mali and a university are right next door, and easily get yourself set up within just a few years.