The place ATP has their at LZU is probably bigger than what they have down there in CRG. The hanger is huge.
As far as a place to live while staying there, it's the suburbs and a room to rent is gonna be hard to find for that short period of time. I would check with the Country Inn and Suites and the Holiday Inn Express. I used to pump gas out there and they gave us crew discounts since we sent them business. You might want to check with the AJC classifieds under Gwinnett county as far as rooms go. You never know what you might find.