Wood, aluminum, carbon?
Do you know how far the shelf is cut into the riser?
At 30" you'll be pulling 48-50# depending on how the bow stacks past 28".
I shoot a 53#@28", 62" recurve. Cut past center (how much past center I really don't know)
400 spine, 30", 4" 3 fletch, 135gr of insert and...