I'm really glad to hear that you're switching everything over to the pain doctor, as I've been rather concerned this whole time about how you've been treated, and to me that is not usually a good sign about future treatment by that dr.
Find out about the surgeon that your pain doctor will be using as that is just as important as taking your pain doctor on as your new dr. He/she may have several surgeons they use so find the one with the best track record of doing these special types of surgery.
Good luck