I suggest you approach a lawyer before approaching the guy's insurance company. If they see you going solo they're going to think they can cheap out on you, and they'd probably be right. Because of some guy's dumbass driving your body and your bike is messed up. I wouldn't take that lightly if I were you, especially considering the perp was trying to cover his ass at the scene. That would just piss me off.
Good luck and I'm gald that you are mostly okay. Keep us informed as to how your bike holds up.