Jon...did I read somewhere that you are expecting a 7.5 lb. plane RTF??my god man...if that is true...that .80 is going to be to much power...I may have read that wrong on one of the previous post.
Back in the Paleo Monolithic period when I flew comp. pattern it was not uncommon to have a 10.5 lb. plane with a piped .60 doing the work but that was when the box was from one end of cave to the next cave at Barney Rubble's cave house My god ..I am getting old[:-]
We only dreamed of horse power like the Webra but that was when the dis. limit was .61.

Boss