My friends and I have done 3 Kadet Seniors converted to tail draggers and flew them with OS 61 four strokes and they are great flying machine's. Put the main landing gear axles even with the leading edge of the wing and they take off and handle fine on the ground. The Saito 72 will be just fine for you. We aileron servo's in each wing bay. You will have many hours of fun with this combo. We have lights in our's for night flying.