I was doing some more checking and I came across the: "The House of Balsa PT-19 is designed strong and light so it flies superbly on the smaller .25 to .32 size engines. Wing Loading is only 18 to 21 oz/sq ft." < as quoted Looks so good I may get one myself. The 25FX should be lots of engine for the plane. The plane is also decent size with 50 1/2" wing.