I fly the U-can-Do 46 with an O.S. 91 FX, the above are great suggestions, the only thing I can add is to pick a prop that will help you limit speed. I fly 1/2 throttle most of the time with a 14 x 6 prop. This plane will come apart flying fast. The landing gear really needs to be beefed up. But it is a great plane that I'm sure you will enjoy. There is nothing better than taking off, pointing the nose to the heavens and watching this plane go.....and go...... and go.......