I go with the decent size tool box, spare antifreeze jug, couple quarts of oil, tow strap, spare belt(s), and thats about it.
People malign the factory jacks, and probably rightly so if running huge tires (plenty of travel for 33's at least), but I've used mine multiple times in the woods, and it's never in the way when it's not being used. Also never failed me like hydraulic ones have.
Tool box is plenty big for most everything I need and then some, and the nice thing about a "normal" tool box is that you can move it around as needed to fit other junk in there if going camping, etc.
The CO2 tank and oxy/acetylene torch setup go in the trailer when I'm pulling it, but the 20lb tank and miniature oxy/acetylene setup easily fit in the back if needed. I just don't bring the torch unless I'm with a large group, as I don't see needing it very often at all and not worth the space it takes up.