RE: How Hard can you push a Kingcat ?
Out of interest, why do you even want to do snap rolls at full throttle? If you're that way inclined you should be landing the jet and taking up an aerobatic prop model.
The risk to $10,000 of model as well as people and property if it goes wrong seems to preclude the idea from any form of sensible thinking!
There must be a multitude of other safer options that would stop your boredom with this model?
My 0.02