Thanks to all of you for the advice and support. Unfortunately, I cannot get the nerve block because I am deathly allergic to local anesthetics. The doctors know that so the post-op plan is for me to take a very powerful pain killer called Dilaudid. I understand that it is far more powerful than the various "oxy" meds like Percocet.
I will keep this thread updated so that those who might be facing something similar can use my experiences as reference material.
To that end, here is the first update.
To make sure that I don't have too much bleeding during or after the surgery, the medical staff has told me to stop taking the anti-inflammatory medicine I have been taking for arthritis for the last 15+ years.
Within 48 hours of stopping the medicine, everything in my shoulder got much worse. The anti-inflammatory medicine (Arthotec) has been keeping the internal inflammation and swelling in check, and it was covering up the worst of the shoulder symptoms. Without the Arthrotec, the shoulder pain has gone from bad enough to want surgery to bad enough to need 24-hour-per-day pain killers, so I am on Percocet every six hours around the clock. And the control of the internal swelling in my shoulder is gone, so this swelling has gone wild. The internal swelling has made it almost impossible to move my shoulder joint much at all. I understand that the bone spurs are such that there is no longer room in my shoulder's AC arch and the swelling and inflammation are being squeezed, thus the impressive pain level.
Now I simply wait for the surgery on Tuesday.
My hunting bows are all 50-52 pounds draw weight, and I wonder how long it will take to get back to comfortably pulling a bow.
I will update this thread again next week after the surgery.