I have one converted to taildragger and quad flaps. I originally had an Irvine .53 on it and it flew very well with it. I swapped in an ASP .75 2stroke and it's wayy more power than I need.

I've flown it with the CG slightly ahead of the manual suggested location, but I much prefer it right at 115mm, which is right at the main spar. It flies straight and true with no trim changes required at different throttle settings.