The Goldberg Cub used to be the standard, everybody had one at one time or another. The landing gear is the weak point as mentioned already. do not overpower it, if your going for the full size wing. I would leave the ailerons alone, or get GP cub instead which has those barn door ailerons. The Goldberg cub is easier to build but makes compromises for simplicities sake. If you really want a scale cub, I would look into the Sig 1/5 scale or 1/4 scale. Flaps are not needed on this model and would provide little benefit.