Rick,

I have the WM Clipped wing also, you guessed it, the red one. I have a Magnum 52FS in mine and it has plenty of power.

I take off like Adam, gradual power increase until the tail is ready to lift off, then some up elevator. When I first started flying this model I would slam the throttle open and it would go down the runway bouncing from side to side. I would end up pulling up as it was racing back across the runway for the third time. But now I know how to launch it and I have a much more relaxed time in the air.

As for the engine, I prefer the FS on these types of birds. If you can get one I would and have fun flying.