bonsai tree

Hello everyone, I've been keeping an eye out for a rock for an upcoming root-over-rock project. After months of passively searching, I found this little gem: While it has numerous wonderful features, it looks like it will come with it's share of difficulties. I go over these in the video...

Well I had a few questions and thought it best to consolidate into one thread. The first question is it too early to put my juniper bonsai in for wintering? Also, I've decided the egress window would be a great place for wintering, do you think it should be fine in this egress window? My...