Air tank question

[ukjeeper]

The air setup i currently have consists of a Quick Air and an ARB LINKED TOGETHER to run the ARB lockers, with an additional airline running to a quick connect. Running both compressors together i can inflate a 33" MT from 16 to 32psi in 3 minutes, so they have the ability to work pretty good.
However i am wondering a couple of things. I was given a 5 gallon airtank recently and i was thinking of hooking it up to my compressors for extra storage.
1) Would the compressors be ok filling up, and maintaining, a 5 gallon tank? Or would it F them up?
2) Would the work involved be worth it? Would i get enough stored air to make a difference in airing up myself (and others). Obviously i am not even considering running air tools (i know the limitations of 2 small compressors!), so this would JUST be for airing up, lockers, and other light uses.
Any advice would be appreciated, Thanks.