As A1 said, if all youre doing is their A&D records its going to incredibly stressful. You are the lightning rod. When something goes wrong, you will be struck. Sooner or later you will want to suck start a blunderbuss.
However, if you have access to the museum and get to play with all the stuff (and you should be able to since you have the FFL) then that could be pretty epic. You have to do audits and verify inventory, so you might be good to go. Might be worth it.