Alrighty. Pics fixed above for hopefully the last time. From now on I'm using photobucket, though I agree that it's king of cumbersome.
Thanks for the advice, especially vangremlin and eaglefreek. I have the front axle and starter out, and I've read the procedures from the TSM, Clymer, and Chilton. I had a little time yesterday, and I must have laid under that thing for half an hour trying to make a plan. Yesterday I was feeling pretty lousy about it, that I was in over my head. I REALLY don't want to drop the frame crossmember, just looks like a big job.
Luckily I haven't touched the oil pan bolts yet, so I can still put it back together. I'm pretty sure the leak is the rear main. The valve cover was leaking but that has been fixed. I took off the plate that covers the flywheel, and most of the oil crud was on the outside of the cover. Seems like the rear main is the most likely source, but I also read something about the trans output shaft seal so now I'm worried about that too.
The procedure eaglefreek mentioned seems possible to me, I would feel OK about taking out the trans crossmember and letting the trans and engine sag a bit. But I wonder about the transfer case - that would have to sag also, correct? Or maybe just take it out, hmmm.
I've done a lot on this car, but maybe I need to find a shop to bail me out on a couple big items. I'll keep you guys posted. Thanks again for the support!