You're going to love that plane when it's done...I have the 1/2a, .09. .25 & .40 sizes, and am currently building an 8-footer. MikeSell is building one with an 80" span. My .40 size has a K&B .61, and gives unlimited vertical. I have also removed the tip blocks and installed tip plates, and converted to taildragger gear. These planes are basically sticks with style, but they fly better...