Metadata to ensure audio CD has tracks in the correct order when burned from iTunes
The track numbers in iTunes are mainly for human consumption. The computer will burn them in ascending order and once they're on the CD they'll be numbered starting from 1.

So, basically, I think you can proceed and everything will work as you want it to. 

Thoughts:


you might be able to burn to a virtual CD to test?  
look into .cue files  
use Tag Editor or A Better Finder Renamer to work with audio file metadata