We wouldn't need the second floor, though. Have a basement for storage and keep furnace and water heater down there, then combine main floor utility room with bathroom for larger, combined bath/laundry.
I like this but would move bedroom 2 over and place home entryway where bedroom 2 is now. Utility closet access from garage. - Who Else Wants Simple Step-By-Step Plans To Design And Build A Container Home From Scratch?