The Butterfly is one of the great "slow fly" airplanes, I have two, one with a Magnum 25, the other is electric powered. I seldom fly the Mag powered any more since electric gets me up to find thermals and I can shut down the motor. When I lose the thermal I start the motor and go after another one. To save weight I eliminated the landing gear, and used a carbon fibre wing rod. To go electric you need to extend the nose so the balance is is easier to obtain. Good luck, you will really enjoy this plane.