Did you consider installing a fuelpump cut-off switch, controlled by the engine's oil pressure?
So if the engine stalls for some reason, the fuel pump is shut-off as well.
I don't consider things like that much, as I even dislike neutral and/or clutch safety switches.
If it wasn't for the Wife possibly needing to drive my car some time it wouldn't have it. :D
I did let the pump run for 5 min or so without the engine running just to make sure it couldn't cause a problem though, if that counts for anything.