Ahah, Bobby sent me pictures. It's cute. The only issue we find on the low wing CL planes is that the vertical CG is high, so they roll out while going around the circle, flying with the outside wing low. That's why the leadout guides are mounted above the wing tip the way they are, to get the tether point closer to the center of mass. At 260 square inches, a mild 15 will be plenty of power.