Back when I was a kid we lived in a house with a 4 car garage that was 2 wide and 2 deep. My dad had to cut a hole in the sheetrock so that he could get the motor between the studs in order for my mom to park her car in front of the boat.
That may be an option for you if your better half will allow. Would allow you an extra 4". We only had to cut a hole big enough for the cavitation plate and prop since they stuck out farther on the older Yamaha's.
Keller Williams Realty (817)713-0508