As of this week, I finally have a proper Star Wars-worthy surround system, so obviously I’m going to take advantage of this development soon.

I have some questions for people more familiar with surround setups:

I calibrated the new speakers using MCACC Pro, which seems fine for the speakers, but seems to have effed up the sub levels. I’m assuming that if I use an SPL meter, I can produce a 60Hz test tone from my fronts, mark down that level, and then produce a 60Hz test tone from my sub and adjust the sub’s volume knob until it matches the same level as the fronts. I’d also try to zero out any receiver-driven adjustments before doing this. Seems sensible, but is it correct?
Eventually I may determine that I want to boost the center channel in an attempt to further improve dialog clarity. Obviously this is a blunt tool for a subtle problem, so what’s the safe range for adjustments?
Should I admit to hairy_hen that I’ve been enjoying his mixes downmixed to stereo until now?
Do you have favorite bits of the trilogy as far as the surround presentation is concerned?