Check out this video on You Tube and you will see what a P-6E Hawk can do with a Fuji 43EI gas engine. Why would you want to fly circuits and do loop and rolls when you can fly this bird like this. Great Space Shuttle with smoke on and more.......

http://www.youtube.com/watch?v=JqoGpRlYAmg&

BOUND_4_HELL
You can never have too much power, as you can always throttle back.