I've worried a little about the PVC. Only about 20' is underground and the rest will be in a crawl space until it pops out in the shop. So PEX will handle a decent amount of pressure 90-110 psi.
The original plan was to run some low voltage to the shop for an alarm but I thought since I have to dig through 3/4 gravel and 3" pit run I might as well do the air too. Great idea to also run a couple of extra conduits for future water and power.
