the 5700kv will do fine on a 3 cell, u might want a ubec, but i will leave that to someone else here, so idk there, but i know ppl run the motor on 3 cell no probs, just the speedo because there using the internal bec, so it might heat up

i think u will be more then happy with a 2 cell, the truck is small, i think its ibjammin got some crazy speeds on 2 cell, i THINK

and yeah i thought so lol, no avi got me tho, welcome to the fourms btw