get some 50C constant 10000mah lipos which weigh a few hundred grams and your set... will jsut have to wait a few more months/years before these are available!
try find the highest C rated packs you can find which arent maxamps.
hyper 8.5 pro SOLD!
Monster Max Still Working...
JR SX3
Neu 1512 2D/S
12t pinion
4800 zippy-r