I think you should flip/mount the servo much farther forward, then put the liop between the esc and the sx-mount the esc near the motor on the tranny or something. Some a123s might be easier mounting wise, or a small 2s lipo, around 3000mah.
Hehe, thanks rootar. Its about 300mm long and 220mm wide w/o the wheelie bar. Deisel, I found a place on the side of the chassis to mount a standard 1/10 lipo pack. Should have plenty of space.