Looks great!
I used the Rapid Air 3/4" system as well, had some 3/4" 304 stainless which I used as a vertical to get some of the moisture out, it works well, however I put my lines on trapeze's to get everything above the roll up doors, it works great in getting the moisture out of the lines and is very easy to put together.
Also used a bulkhead fitting and placed my blast cabinet vacuum outside the building.
On thing... I wish I would have put a floor drain in one bay at least.