One thing I would definitely recommend if you have a fixed
compressor/pipe setup is a small portable air tank. It isn't a big
deal when you can haul the compressor to the jobsite but once you make
everything permanent, it becomes a big PITA, even if the compressor is
designed to be permanent. I use ones made out of modified propane
cylinders for forklifts. They have a small length of coiled tubing
attached and can be hauled wherever needed.