While I don't have a shop, I do work in Jeffs regularly. He put a lot of thought into layout and use of space which is the key IMO. Not to give Todd any credit, but a side mount garage door opener and raised rails is a very smart idea. Locating the compressor outside is another. Once you get tools, equipment, parts and projects in there it's going to get small really quick. So make sure you can walk around two cars in there without issue.
Here's a few pics of Jeffs shop. Maybe a good way to get some ideas on what will work best for you.
The big door is 16'x10' tall FYI
I'll get better pics next time I am over at Jeffs. I really like the fit and function of the way he set things up.