Wire it for "sound!" What I mean by that is put in more electrical than you think you'll need. Wire for communication. Plumb for air. Heat. Cooling. Put in more lighting than you think you'll need. Including outside lighting. An office space for the paper. A machine area. A parts area. A storage area. A lube area. A fabrication area.
Wow. It already sounds like it's getting small.
Just kinda throwing out the wish list. Then again, this is where I work:
http://www.bunchobikes.com/lift1.jpghttp://www.bunchobikes.com/lift2.jpghttp://www.bunchobikes.com/lift3.jpghttp://www.bunchobikes.com/lift4.jpgThe last two pics are my wash bay. 6 doors on each side of the building, drive through bays.