I have seen the E-revo do flips and such and the E-Maxx should (haven't seen it in person. I know my Savage will w/ ease. It also does cartwheels and flips end to end, lol. I have seen the Savy Flux do flips w/ ease also.
What kinda jump/ramp do you have. Even w/o the Lipo, w/ the right pre-load on your shocks, you should be able to get enough lift. Unless the kit is just to heavy. I don't know much 'bout the Rustlers