First off I'd do the following:
All the fluids, both diffs, transfer case, tranny.
Diffs take 90W gear oil. If it's a limited slip rear you will need friction modifier or use valvoline synthetic, it has the modifier already in it according to the bottle.
Transfer case, I use mobil-1 atf
Tranny, AX15, takes GL-3 [not GL5 or GL3-4-5] GL3, either dealer supplied or from redline, about $11 a quart for redline, $18 from the dealer, your choice.
Engine, I have always used Mobil1 10W30 and either Mobil-1 or K&N filters.
Cooling system, I'd drain it, refill with water and add either prestone or zerex 7 hour flush, then add the prestone back flush kit and back flush it, drain it, refill with 50/50 mix of prestone and DISTILLED water. At this time you might want to replace all the hoses, tstat and pressure cap. I'd go with OEM hoses, they fit and the heater hoses come prebent and have clamps already on them, the lower rad hose has a spring already installed from the dealer. OEM thermostat has a bleed hole in it, that goes to the 12 O'Oclock position when installing. Remove the overflow bottle and clean it out.
Other considerations, new serpentine belt, plugs, cap, rotor, wires, air cleaner. From there I'd pull the wheels and check the brakes, replacing the front pads takes about 1/2 hour from start to finish if you don't dawdle..
Start removing grounds and clean them up, all of them, use a brass brush and clean the ends and the mount point, use some dielectric grease when reinstalling them.
Handy tools to have, floor jack, two or four jackstands, KrikitII belt tension gauge available at NAPA, good set of Torx sockets.
Theres a weekend, let us know when you want more to do....

and welcome.