Basically, its the last 4 inches that are stiff. I wouldnt go any more than that. Also, if you can go a little wider, you could put recurves on it for a longer smoother draw. Notice I said, PUT them ON it, not actually recurve the bow. You dont have enough length for that. So you can do it Tim Baker style and tie on some tips and make the bow pull better. Or you can leave it as is, just mentioning ideas, neither is better than the other.