Hi Mike,
Man, did you hit a nerve (no pun intended) with me. I had two levels in my neck messed up and L5-S1 at the same time. Mine was due to genetics and getting old, but the pain still was similar to yours. I had the arm, hand and chest pain on left side, and could barely walk due to the cramping and pain in my left leg. I looked like a little old man walking around

I had some of the same treatment as you, including shots in the neck, chiro, PT and three shots in the lumbar.
I had ACDF with plate and donor bone on levels C5-6 and C6-7 on June 30th 2004. Today, I am continuing strenght training and can honestly say I feel 20 years younger. My L5-S1 has improved on it's own, although I can still feel it a little. I have been strenghtening my lower back , and this seems to help.
My docs said that I sould avoid things that might jar my neck like roller coasters, rodeo riding, etc., but they also said that life is a risk, you could get in a car accident or something, whether you had this surgery or not.
The only real problem I have is range of motion. I can't turn my head as far to see things...especially when driving. I've gotten used to turning my body rather than my neck, and added close-up mirrors. In your case, your range of motion should be 50% better than mine, which will probably be difficult to tell the difference.
Consider that Mike Allscot, the fullback for Tampa Bay Bucks, had this surgery and returned to playing pro football. I would bet you will be able to return to work without problems...you will need to deal with the lumbar...hoping yours goes away like mine did.
Dennis