I am interested to see how it goes. This is our first year with a greenhouse and the temperature in there = the face of the sun, even after adding a shade cloth. We definitely need more ventilation. We do have 3 baby pumpkin plants in there that seem happy enough. And nearer the end of summer, I plan to remove some stems from the better tomato plants, sick them in pots in the greenhouse and see if I can extend the season. Do you also have tomatoes growing outside so that you can compare advantages and disadvantages?