Shop layout recommendations?

When I did the floor plan for my garage - shop I made a large 2D drawing similar to what you have. Then I made scale 2D paper cut outs of the work benches, floor shelves, vehicles and set them on the drawing. I made them loose so I could move them around to maximize work flow and space.
With that I decided on where the doors and wall 110 and 220 electric outlets, light switches and the fuse panel would go.
I also made the people entrance doors swing out as that maximizes wall and floor space on the inside.