What do you guys think about using either of these runs? The rectangular one is 8 x 4, and the octagonal one is 7 x 7. I know we could build one for cheaper, but neither of us can build a bookshelf, let alone a chicken coop run. We're in the city, too, so we don't have a whole lot of room to work with, and we can't free range. It would be for 3-4 chickens.
https://www.amazon.com/gp/product/B002R0F04M
https://www.amazon.com/gp/product/B00E64HZAE
https://www.amazon.com/gp/product/B002R0F04M
https://www.amazon.com/gp/product/B00E64HZAE