I would talk to your physical therapist about what she thinks. Maybe all you need is a redesign of your cutting area. For me, I am tall, and I raise my cutting table (a metal computer desk thing from good will) on the plastic bed raisers and I don't have the shoulder and neck pain that I got from leaning over my cutting.
The accuquilt go dies are expensive, It may be worth the expense if you applique alot, it takes time and strength, and patience (which I do not have), my go sits in the closet right now, one day I will do applique, but right nowI do most of straight cutting, use hst paper alot, and have started paper piecing.