Have been looking for a 10x20 footprint greenhouse with polycarbonate panels, but are running into the problem that most of the ones in our price range of about $5k max have gently sloped walls, which prevents us from being able to place larger rigid plants or racks against the walls. We're in socal doing a backyard greenhouse, so we're less worried about snow load and such than we are about high winds and constant flapping noises bothering the neighbors. Seems like all the straight-walled varieties have the plastic sheet covers, a small footprint, or is one of those $10k kits... We've been looking at a range of places but thought to ask here as well before just deciding to do something wacky like building our own, haha. Thanks!