Put a Xoar 19x8 on it tune it and fly it . You will have to retune a few times as the engine breaks in but the 19x8 won't over load it and will give you the best overall performance If after it broken in and you need more speed you can go to a 19x10 , less speed more pull 20x6 scimitar style prop (I use the Red Wing RC 20x6 on mine )- only after a few gallons of flying time on break in with the 19x8 . On the 35 you may be able to use a 20x8 after its broken in enough.