I don't have the ARB, I have a Viair.
But I mounted mine in an army surplus .50 ammo box, with the hinged locking lid. This way the compressor stays dust free and dry when it's not in use. And when I fire it up, I just open the lid, this way it gets clean, cool air.
But with my air setup, I have the gauge and master on/off switch on the TJ dash where the passenger airbag shutoff switch would go.
If you're plumbing into an air tank, then maybe a front and rear takeoff with quick-couplers so you don't have to carry longer air lines?
Good luck, you'll like that compressor, with the integrated pressure switch and all.