Reviewing the link Greg provided above, the majority of your questions are answered.
Physical protection protection is going to be your call, dependent on the specific install.
Raceway is not required by the mfg spec sheet (link), but agian, it may be your call, based on NEC Article 600.
Supplemental bonding conductor? Again that's going to be your call.
Neon (field installed) is a difficult animal for AHJs. There are a lot of details that are unique to the job, and I have a current NEC handy.
As Greg mentioned, I'll second the comment that the guys a Paige are great, as I used there local office/dist ctr here many times as an EC.