I'm very interested in the results if you decide to take the treatment as my diagnosed as idiopathic symptoms are very similar to yours. My pain extends from below the ribs to midway to my knees, both sides, front of my body only. Started at the waist and spreading slowly in both directions at first only skin deep but now feels to be going deeper in a few places.
I'm on the same dosage of Lyrica as you plus the maximum dosage of Tramadol and a two Vicodin per day. Seems the only time I'm not in pain is when I increase dosages but this is short lived. Considering medical marijuana but don't see how that could work. A good night's sleep has been 3 hours lately. Can't stand wearing clothes or a blanket touching my torso.
I really feel for the folks who have PN in their feet and hands from which I'm spared, That would be the worst.

Good luck to you no matter which course you chose.