Arcinio,
For the air compressor, you can use schedule 40 pvc piping to run lines down the two outside walls with connectors in a few spots for easy hose hook up. The benefit is that the pvc pipe, say 2'' diameter, effectively becomes a large air storage tank increasing the overall air capacity instead of just only the capacity provided by the tank that comes with the unit. This can be very helpfull if you are running a grinding wheel or sander that tend to consume the air supply rather quickly and in the end the rpm's fall off pretty fast. In this case the extra storage in the pvc pipes provides a continuous air supply. The downside is that in the beginning it takes the compressor a little longer to build the pressure through out the pipe network. You could put in a shut off valve in a few places to isolate the added pipe storage when not needed.
Looks great .....
Oh yeah, maybe an extra bed if you are in the "dog house"
Mark