That's a nice compressor. I keep getting cheap compressors for gifts and so far I haven't broken one before receiving another, so I can't seem get myself to spend the cash on a nice one when I still have a couple cheap ones that still work.
My spare tire compartment looks pretty similar. The things I always keep with me: Big first aid kit, fire extinguisher, multiple flash lights, umbrella, poncho, spare water, couple power bars, tool kit (basically just things to change a tire), spare fuses, blanket, gloves and a toque, air compressor, OBDII scanner, jumper cables, tow strap, hunting knife, zippo, and bear spray. On my extended trips I just basically add some more recovery equipment to that list. I think that's about the bare minimum anyone should have with them when they venture into the wilderness - or even away from home for that matter. All fits nicely under my false floor along with my subwoofer!