I have a nitrogen tank and regulator and would be happy to charge them if you don't mind venturing to West Jordan (I'm sure there are other RMEers closer to you with tanks as well...) As long as you can put something together in the reverse order that you disassembled it, you'll have no issues with the shocks. Rebuilding it will probably just consist of replacing a few o-rings, maybe a teflon wear-ring, and one seal.
You will probably need most of the following:
basic hand tools
Impact gun and sockets (to remove the piston/shaft nut, which on a basic rebuild you shouldn't need to)
snap ring pliers (may not be necessary)
small screwdriver/pick to remove o-rings
thread locker (Loctite or similar)
Propane torch
vise with soft jaws (I just use wood blocks in my vise)
seal driver kit (I just use appropriately sized sockets)
shock oil and something to measure it in (I have several unopened quarts of 5w if that's what you need)
Depending on the shock design, you may have to get creative to make a spanner to get the rod guide/seal carrier/whatever you want to call it off.
What are the specs on the FOX shocks you'll be selling?