I was wondering why you would install so much hard lines instead of using one or two hose reels on swivel mounts? Are you trying to make sure that you overbuild it so you don't have to worry about it later?
Air hose is just about like extension cords. Install more outlets so you don't have to drag a cord around. And with larger hard lines you can maintain a better pressure instead of losing it on a small hose. The more small hose you have the more pressure drop.