Just to add to the excellent list detailed above:
Soak the s*** out of all exhaust manifold and downpipe bolts. Some folks leave the manifold in place, some folks don't.
Unbolt the a/c compressor and lay it on the pass side fender area. No need to open up the a/c system unless you're out of freon and need to recharge.
remove the top radiator support radiator and grill per above. A slight PITA radiator bolt on the driver side, next to the headlight. Search for tips, hints
Pizza, beer, weed....
gently lay the a/c condenser toward the front while leaving the piping connections intact. This will give you more room for the engine to swing forward. A big help if you're moving the entire drivetrain as one piece.
After you undo the bolts from the transmission, engine mounts, remove the front wheels and lower the front of the 80. Some folks don't have the head room for a cherry picker so this helps out a quite a bit.
beer
Some folks are against the use of impact tools but I go ape s*** with them when it comes to removing fasteners. However when installing, I do most things manually or very carefully use the pneumatic ratchet. If I'm gonna get carpel tunnel, it's going to be, well, from you know what....!
LOTS of beer, weed, advil, etc
If you can swing it, remove the entire drivetrain as an unit. Given the age of our rigs, replace the seals between the trans/Tcae, maybe the Tcase output shaft bearings and other hoses and such. I know, this is a slight scope creep but to be honest, doing this PITA project all at once is easier than piecemealing out for the next few years as things go south. Just a suggestion.
PS: I'll be swinging through Lubbock with a moving van and a tow dolly on Jan 31st. Can't stay long since that's only the half way point but if I can assist, just hollar.