The inspiration for a cold climate greenhouse is from Jerome Osentowski’s book: The Forest Garden Greenhouse https://amzn.to/3bgqRkN. This book is amazing. What’s more amazing is his ability to grow abundantly at more than 6,000′ above sea level in Colorado.
I hope that you will join me on this journey. Please comment below and let me know your thoughts on a cold climate greenhouse and also if you see things that can be improved or that I failed to think about I would appreciate the input! Key books for this project:

The Forest Garden Greenhouse https://amzn.to/3bgqRkN This is the vision and strategy
The Year-Round Solar Greenhouse https://amzn.to/3enHblM This is the nuts and bolts and tactics
The Prepared Homestead

Love this idea Sean and I'd love to help in whatever way I can, even if it's just connecting you with several people I know who could be a big help. I'll try calling you tomorrow morning.