I've been waiting for this for a while - an X0 project that could actually get FINISHED.
IMO, a proper restoration via an X0 capture is the next best thing to a 35mm scan, which has almost no chance of happening (for legal & financial reasons).
I love that you want to go for the theatrical colours. It'll be tricky, but definitely worth it!
I agree that the Def. Collection shouldn't be used, as not only has it been done already, but that set has DVNR. NO set with DVNR should be used, as tons of fine detail gets covered up.
JSC is a good choice, but I wouldn't overlook the smear-free '93. Yes, it has problems, but some of them might be caused by a poor capture, not the disc itself.
Might it be possible to combine those two sets Black Magic style? Maybe even blend a bit of the upcoming official Blu-ray?
Also, I must ask - will you be using the BNC output? (See post here dated 10-09-08, 03:40 PM)