I cut shelves in all my bows. I think Pearly is just scared to try it :D .
Bow of that length, it's important to have it's limbs well timed. You're going to know it if'n it ain't! An 1 1/2" above dimensional center of the bow is pretty common for long bows. But for a bow of that length, and to achieve best timing for longer limbs, me personally, I'd go maybe 1 1/4" above center. An use a medium to slightly straight wrist grip........Art