An interesting tangent I thought!
OK, I did my axles recently and would say you ideally need at least two jacks, 4 axle stands, some ratchet straps and a perfectly level concrete base to work on! Straps help pull things into position and line bolt holes up on re-assembly.
I have an unlevel tarmac drive which made it fun. If working on tarmac put your jacks and axle stand on sheet of plywood/MDF of similar to stop them sinking in. Also stack your wheels and whatever you have that is suitable underneath to support the Jeep if it does wobble off stands.
For the unbolting/bolting make sure you have big enough ratchets/breaker bars. You will also need several sizes of hammer - a good size lump hammer is particularly useful I find, especially on control arm bolts.
I'll leave the WD40 & copperslip decisions up to you