The most serious thing that jumps out to me on the MRI , is the L 3-4 where it states the disk is contacting the nerve root on the right.
Are the lower body symptoms more bothersome on the right side?

For the cervical spine- the lordosis is something that PT can help with, many with desk jobs, poor upper body postures, or repetitive work have this problem.
minor disk bulges may be helped with expert PT also.
Degenerative issues are less likely to be improved..

Did you do a desk job or have any neck/shoulder injuries in the past that may have caused the arm & neck symptoms?
Some of the arm pain & problems might be a chronic RSI thing called thoracic outlet syndrome (TOS) for more info on it here is our useful sticky link about it-
post #1 is a crash course of info -
http://neurotalk.psychcentral.com/thread84.html

I'm guessing the HVAC was a lot of lifting/reaching overhead & tool use, etc? and then a desk job?? Make me think TOS even more...
Your C spine doesn't read as being a major factor in your symptoms compared to many I have seen..

Have you seen a chart like this before - which nerves relate to parts of body -
http://neurotalk.psychcentral.com/al...pictureid=5102