You have a kickass assortment of cabs and speakers by the way.
Over the last year or so, I've gotten serious about making sure the instruments sound good even if the bands have garbage gear. I bought some nice pres and comps and thought to myself, "Great, now I can clearly and accurately capture crappy gear."
So, I got a yamaha stage custom kit, a sans amp bass driver with a p bass and a couple guitars, a couple guitar amps and all those cabs. For what it's worth, I built one of the 2 x 12's and the 1 x 6". I really don't have much of a budget as I only record very part time.
Now, as long as they have decent songs, it should sound good. Yay.