Through my blog I have met this (awesome!) quilter who has both a longarm service and a new cutting service.
http://www.cvquiltworks.com/accuquilt/
I put the link to her web page about just the cutting. Don't know if it would be feasible for you with shipping, but maybe someone closer to you offers this sort of service also.
Have you seen the electric scissors out? They might be easier for you to handle. I tried them out at a Hancock Fabrics store in Green Bay, Wi and was impressed. (Not sure exactly where you are in Mi.)
I am sorry to hear about your fibromyalgia- I worked with someone who had it and she was miserable sometimes. Sending prayers and thoughts your way!!