Well, I'm doing the same for my e REVO & I am using :
1) Medusa 70mm 1600KV motor
2) 6S Rhino 20C 4900mah lipo
3) MMM
4) Tekno sway bars
5) 17mm hex conversion
6) single servo arm with ACE1015 as steering + stronger servo saver
7) Gearing 58/19 for top speed around 38mph
This setup is about the limit of controllability for me at a track. I can't even go for full throttle at the straight !
REgards,
Joe Ling