ORIGINAL: CrashBurn69
Its not so much the flat runway, its the pilot that worries me with that little clearance with the 14-4. Most fields are grass around here.
That's what most people run into with the Funtana and the Saito 91 and 100: You have to run huge 15 inch dia props. The stock landing gear won't cut it. You should be fine though. Try the 13-4W first and see how your RPMs are. I'd be willing to bet it will work well. What does a 61 FX weigh with Muffler? I'd be would think around what a Saito 91 or 100 weighs.
Joe