I would like to go HV, but was thinking the dimensions of a many-celled pack would be physically prohibitive because of the thickness. I'll have one whole side of the chassis for the length, but think I will be width and height limited. Nevertheless, I won't be purchasing any of the electronics or batteries until I get the vehicle in my hands, the motor mount made, and the rest of the layout sketched in.
I'm really anxious to start this now. Might have to check my bank account to see if I can shift funds around a bit.