I installed the curtis compressor today. It is where it is supposed to be, wired the way I intended, etc. The only work to be done is adding an auto drain and properly attaching a pressure regulator that was included in the sale.
That page explains what I have done, in some detail. There are two new circuits, one for 110v outlets behind the compressor (for auto drain etc), and another is a dedicated 220V circuit for the compressor. Wires for them are enclosed in 3/4" EMT.
The mess in the garage is temporary, it is in fact organized enough to allow two vehicles to be parked. :)i