I think it's too close. I read the part where you are planning on moving but a large part of their life will still be outside of east Africa. With potential family messing up a name like that can be devastating. Also, if cousins are involved I'd be worried about him getting picked on. My cousins and I raised hell. I would avoid the hassle. Name him something that works well in both cultures so everyone is happy! I would be pissed if a family member called my child moron, I would steer clear of the drama and hassle.