Because of the rotator cuff surgery, I recommend going for a bow weight of 45-50#, which is lower than it would be possible to reduce your existing limbs. If you like the grip and the riser, perhaps you can have a new set of limbs made for it, or if not, maybe you should sell the bow you have and buy another new or used one. If your rotator cuff surgery was recent, you are probably doing rehab excercises, and I would recommend an even lower weight, maybe 30-35#, until your shoulder is fully rehabbed.