If you don't have a shelf cut in, then that means once the arrow is released, the shaft has to bend around half the thickness of the riser undisturbed to achieve good arrow flight, and that would take a very weak shaft, depending on how thick your riser is. I would say, your way over spined, or need a lot more weight up front.
35-50 is a .500 spine, I would be looking at .600’s. I made a self bow out of hickory several years ago, and ended up with full length GT 1535 with 145gr up front. But I had a shelf cut into the riser.
Good Luck, hope this helps!