Hey Jim..... I'll go along with Elmshoot on this one, use the TT .42.
If you have some strong mini-servos, use them. Find yourself a lite-weight battery pack and have some real fun. Forget the fancy stuff (steerable tailwheel) and any thing that adds weight. This thing is funnest when it is lightest. Don't worry about the spindly landing struts, they are plenty strong for the kind of landings you will be making if you keep it light. My average roll-out when there is any breeze at all is measured in feet rather than yards (sometimes in inches).
Have fun Bob C.