30 minutes or so. When you have components connected like that, it's a pain to get them all lined up correctly, especially since they overlap in the layout view, partially obscuring each other.
Well, at least FLE didn't screw up like it did for my research station I was making for Virginia. I gotta do it again now >_>
Regardless, it looks pretty nice, and maybe you can add that those domes aren't just for farming, but perhaps recreational facilities ? Y'know, sport courts, parks and whatnot.