Thanks for the reply!
I think my best solution came to me in my sleep last night...
I'm tossing the idea of a cheaper polycarbonate greenhouse, and instead, am going to go with a hoop house/film covering.
I purchased a tube roller this morning (>$200), to roll my own hoop house(s) out of larger emt conduit. I can purchase film- as soon as I figure out what would be best!, and make end panels from 4,6 or 8mm twinwall and a simple patio/storm door with a wood frame. I assume the film would stand up to higher winds for the most part if applied correctly. If it works out well, I can always buy polycarbonate panels for the roof section and make a more sturdy/permanent version.
I figure I can erect one over some of my current garden area, about a 14'x28' section, and use it to house my starters next early spring. I could make a much smaller hoop house/cold frame inside the bigger one and heat it with a small 110v heater, to protect my starter plants while they get real sunlight. Or depending on the temps/weather, maybe heat the entire thing? Summertime, I could roll the sides up to keep from baking my plants, and hang shade cloth if needed?
I need to figure out how to irrigate the plants since I don't think I'd want to run a sprinkler inside and soak the walls. I have a few drip/weep hoses, and it looks like you can buy fancier versions of those in a tape form that would probably be cheaper and easier to work with for larger amounts of plants.
All in all, It will be much cheaper, and I won't be risking spending thousands on a small greenhouse that might blow apart in the first storm!
