Thanks Camp!
We thought about it every which way. It might not be perfect, but it's better than it was. We like the space between vehicles. You can go straight to the back (where the workbench is) without walking around a car. It's 28 feet wide so there is some room on the wall sides too.
If we do end up with a tractor, I think it will just barely be "big enough."
In any case, it is what it is now. It's in the hand of the engineer for drawings.
Currently there is no door on the back, but I'm told that could happen without much disruption. The other option is a second man door on the side you can't see, facing the house.