Hi all, I live in a Chicago suburb, so we get weather variations (below 0 in winter occasionally, and 90 in summer) I am also planning for 4 hens for starters. I like this coop because I have the majority of materials on hand already and it looks like something I can do with relatively little assistance. With a few minor adjustments. door placement/size, making small flap windows near the top, etc. https://www.backyardchickens.com/a/basic-backyard-coop-keep-it-simple she says she has bantams though. Would this be an ok size for medium size hens, especially if they're in there for long periods of time in the winter? Also, I can't believe the small amount of space in the pens for the number of birds! I had no idea they need such little space to be happy! I have a 9 1/2' x 11 1/2' area surrounded on 3 sides by the house, so would really only need to build a front and top on the run. This even seems small for 4 hens, but looking at other coops/hens i guess it isn't. (we are also able to 'free range' our hens in our backyards as long as it's fenced and they're supervised...lol) Any ideas to attach 2 x 4's to a house without doing a ton of damage to the vinyl siding?