Thanks, everyone. This is clearly the best resource available on the subject. I've already learned a ton. I wish I had something like this when I built my wine cellar a few years ago!
Badger, thanks for the info about the foundation. I've read most of the threads, including your older ones. Do you have any photos of your foundation? This still seems to be an area of great controversy.
Any other considerations I need to make for a harsh climate WFO?