Well, the floor is going to need some help. When you touch the floor, you get silver paint on you. Something never dried/hardened. The color rubs off.
Anyhow, even though the garage is not signed off yet, we started to put stuff in it. My plan is to go "up" for long term storage, so I got a 180" tall x 144" wide x 42" deep storage rack with 6 shelf levels. It will support about 3600 lb per shelf, or 23,000 lb total. It will double as a workbench, as one level will have a thick wood topper on it. I bought a rolling ladder so I could access the upper levels. Top shelf is 15' up in the air. Here's pictures of Robert and Tom helping install it: