Hello Glenn,
I live in New Brunswick as well. I love your greenhouse project. I would like to construct a similar structure some time. I will keep reading your posts so I can see how things are going.
I am in Shediac Cape, are you anywhere close to there? I am part of a project at the Greater Shediac Community Garden where we have built a kind of hybrid greenhouse (it's a greenhouse but will have other uses as well) and hopefully we will be able to start growing something in there soon. I am really curious how your climate battery will work out. I like to learn from others experiences and then hopefully apply them to my own design when I finally build my own four season greenhouse.
Carla