The Wildstyle and Freestyle are both designed around the YS .63. The YS .63 is about two ounces heavier than the Saito and turns an extra 1000 RPM. There is no reason why the Saito 72 would be too much, the throttle stick is there for a reason.

But yeah, a .32 would hover them!

My Freestyle does some of the best looking stall turns (hammerheads) I have ever seen. The long fuselage and all that rudder authority just make them perfect everytime! The Wildstyle would be even better because it has no vertical stab, just a rudder!