Obviously the more accurate they are, the better, but so long as the synch is kept to within that small a level of tolerance, there shouldn't be any problem.
Out of principle I did make the 70mm completely sample accurate to Belbucus' original '93 mix file, though there weren't as many edits involved as you've got for those stereo tracks, and I knew exactly where they all were as opposed to having to find where it lost synch each time. I do know what a pain it can be doing all that. ;)