I'd get a couple good, quality air hose reels and mount them catty-corner up towards the ceiling. Your 80x80 is large, so you may need 4. But my garage is less than half that size, so I'd only need 2. One in a back corner will take care of two walls and one in a front corner will take care of the other two walls, and the outdoors if needed.
I'd have a small room for the air compressor.... its loud.
I'd have a small restroom with toilet and WIDE sink. Wide enough to get my forearms into when washing grease up to my elbows. :confused3:
I'd have radiant floor heating!!!
I worked at airports with heated hangar floors.... oh man is that nice! :thumbsup:
Plenty of 110v quad boxes.
Just a few 220v boxes. I have no 220V equipment.
Arc welder outlet... I'd only have one. If I had to spend money on wiring in the garage to have two, I'd rather put the money towards longer leads for the welder instead. Locate it nearer to the front door in case you ever want to weld outdoors and make sure your leads are long enough to get to all sides of a project in the driveway.
I don't do woodworking, but a dust collection system would be nice sometimes. A good shopvac with some plumbing around the garage can suffice. Several sucker outlets on each wall plumbed back to a shop vac location will work. I've found swimming pool vacuum hose works pretty well for a vacuum hose for doing our cars in the driveway. Its 25' long! :thumbsup:
Small beverage fridge, of course! :licking: Its also handy to keep fresh fishing bait in the summer, if you're so inclined. :fishing:
Tool boxes. I hate peg board.
I'd make the large door and driveway face south. Why? Here we get snow and ice. North sides never melt due to low angle of sun. East and west are better than north. South is the best. If I lived in the south, I'd probably want the door in the shade.
A small, covered area outdoors on one side of the shop. Its nice to work on stuff outside sometimes, or put a picnic table there.
10' minimum ceilings. My current garage has this....:thumbsup:
Telephone used to be important. Cell phone may negate it, depending on location.
Internet, too.
TV... something for entertainment.
Computer for looking up TBN for help!!!
A vehicle lift. On my wish list.
I'll think of more, I'm sure. :laughing: