Monitor Barn Garage Design

[DeadheadNM]

I'm working on a design for a 42' wide 40' deep garage in the style of a monitor barn that could accommodate an RV in the center, two trucks/vehicles on either flanking lean-to side, and a small mezzanine. The doors would be 10x8 (x2) and 10 x 14 out front and a 6' wide 8' tall example along one side. Outer wall height 10' and just over 12' height under the mezzanine.

The staircase isn't the best use of space but not sure how else to play that without moving it outdoors.

Any thoughts/feedback? I should probably add a small side entry door and lose/raise the front window to accommodate a lamp over the center door.