In no particular order...
265/75-16" are probably a good compromise @ 31.6", since you didn't want to go too wide, also, the wider, the taller, the heavier,... the lower the mileage will be.
The "bug" doesn't bite us all with the same intensity...you'll never know untill it's too late.
As far as quiet off-road tires goes, my two faves are Nitto terra grapplers & Bridgestone Dueller REVO's.
Jacks & stands ?...shop around, I found some spiffy chrome 6 ton stands @ Sam's Club for 25 bucks a pair. Got my jack @ Harbor Freight.
You can crank your T-bar nuts with a 1/2" ratchet, though some extra leverage (pipe to extend the handle or a breaker bar) will come in handy, also liquid wrench or PB blaster is your friend. (put it on your nuts)![]()
You will find a great "how to" on the 4X4 wire.(also giving you a better idea of location)
OR...crawl under & trace the torsion bar back from where it attaches to the lower control arm, at the end of the T-bar is where the adjustment nuts are.
edit...I decided I like the "how to" for the T-bar crank at Planet Isuzu better...
also has other info. of intrest to you.(HD tie rods etc.)