Buds, you don't need to worry that anybody here will think you're crazy. We all have hundreds of plants, too. That looks like a wonderful greenhouse taking shape there.
On the subject of keeping hoop houses and greenhouses warm, I had a friend in Salt Lake City who used to warm his greenhouse using those big plastic storage tubs full of water. In the daytime the sun would warm the greenhouse up, and the water would warm up too. At night the water in the tubs stayed warm, and also helped humidify the greenhouse. If it got really cold for a long time, or if the days were cloudy, he used to use waterbed heaters (which come with thermostats!) in the tubs to warm up the water. Warm, humid and most of all, very safe! When the sun does the heating it's free, too!!
I leave plastic jugs of water in the sun to warm up if we have a cold night predicted. Then I distribute them around the garden to keep my plants warm in place. We don't have that many nights that are cold enough to cover, but I have a LOT of frost cloth covers for my precious orchids, and all my veggies that go through the winter. Also two nice little greenhouse shelf units with zippered plastic covers for the orchids. See the big water jugs on the bottom shelf? (I put used coffee grounds in the right hand one to see if it heated up more being a dark color, and it did)
