The one off Teggerdine would be tougher to setup from this distance. I won't be back in MI until as late as the first week of June. I might buy a car out of state and have it trucked and stored until I get back.
A non-heated garage is okay if it's more or less staying shut so the car would be isolated from excessive moisture in the air. (ideally)
I thought i'd heard before there was some storage in a nice pole barn near the corner of Eagle Rd and White Lake Rd, but nothing's coming up on Google. Guess they don't have a website or advertise it.