Dang you've got bows for years there! I've made a couple of short flatbows of what I believe was big leaf and they took about 2 inches of set, but still shoot. We're talkin like 50" 2 1/4 wide to 7/8 tips 3/8 thick, granted it's a 22" draw...Maple will make a bow, I'm sure there's at least a couple in all that wood! Good luck