I am looking into a small to medium greenhouse for my most cold sensitive species, will have electric heat, and don't want to go the route of a hoop house or plastic film. I want to do all metal frame with polycarbonate panels. Most greenhouses I see on a commercial basis in this area use hoop houses with plastic film, I assume because it's cheap. I wanted something that looks nicer, would stand up to 100 mph winds, and could go 10+ years without replacing the siding/panels. I was thinking of getting steel frame only metal building kit with 14ft ceilings and finding brackets for the polycarbonate panels. I want to be able to somewhat easily remove the bottom panels for summer months. I just think the steel frame only building kit would be sturdier, cheaper, more options than a greenhouse kit option.
Just looking for some feedback on this idea, or if I'm way off base.