You know, i personally don't see the problem to have Busa as your first bike. My first bike was GSXR 1000 and i loved it much more then my girlfriends Ninja 250, i really was feeling unsafe on this thing, GSXR was much more balanced, feels much more comfortable riding behind trucks. Steering on 250 was so sensitive that i noticed some times a slight waving on the road. If person is a crackhead on the road, it doesn't matter what bike he'll take, he will be dangerous. You don't have to open the throttle full the way on the bigger bike. I think the best help to your nephew, is to pay for he's basic riding class.