I think the one north of town is at the store/showroom at Avalon in Alpharetta. The point of the pin isn't the location, the shadow is, so it's not as far up 400 as it might appear. It looks to me like the others are Columbus area, along 16 in what looks like possibly Metter (is there anything at that exit?), and along 20 between Atlanta and Augusta, probably Madison since it's right off 20 and big enough to have some possible locations with amenities.
ADDING: I'll bet it's Metter. Exit 104 looks like a decent-sized exit.