I'm a novice, but I think you want at least one door and one window. I'm working on a coop somewhat larger than yours, and it won't have any windows--natural light will come through 2 fixed skylights. It will also have two doors (in addition to the chicken door), for cleaning and access purposes. I plan to use threaded carabiners on all door latches, to keep raccoons from opening them and both nesting boxes--we have a few raccoons in the area, and I've seen how ambidextrous they can be when wanting to get to a food source.