well there are a couple options, it depends whether u want to scratchbuild or use the speed build kit. Numavig has a nice cub with a 47 inch wingspan, except ull have to scratchbuild out of 5mm depron and some balsa wood. As for the ft cub, I built it myself and I loved it, and it has a wingspan of 38 inches. The difference in the two is that Numavigs has a rounded 3D nose, whereas the ft cub has more of a 2D nose if that makes sense. Also, numavigs will be lighter and cheaper, but the ft one is a fantastic trainer. Ill look for other options but in the meantime please tell whether ull kit build or scratchbuild.