Sammy, is there any way that you could dig down in the crawl space to aboiut 4 feet down? The temp there should stay at about 50-60 all year and would be ideal. I don't know about protecting the wine from critters and crawlers, but I would try to find some type of sealable container.
BTW, what is a "shipping room?"
Where there's a will, I want to be in it.