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?"
Never give up! Christopher Columbus never gave up. Benjamin Franklin never gave up. Oliver Twiddledee... (Who's he?!) You see, you don't know because he gave up!