I second Super Wasp option.

I have one from 2 moths ago and love it, in fact i can hover forever, do nice climbing flat spins, tight loops, harrier and i'm actually trying elevators too. Knife edge is not as good but i still like this one. .40 FX should be enough, mine hovers at less than 1/2 throtle using Byron 15% and MA 11x5 (i know this is not the best prop) so you could be using 11x4.