No plans for the flaps. With a built up wing, I simply measured where the back edge would be and started the wing skins on the edge (top and bottom) of where the rear of the flaps would be. The width was determined by scaling off a plastic model and cutting inside of the inner and outer ribs. This meant making a false rib for each end of the flap. A Zona saw was used, letting the saw rest against the upper and lower wing skin. Actually is it was pretty easy. Slats would be a little more difficult, but if you do a search here there is some good info available. I'm sure we would enjoy some pics of your progress. Bill S.