Wow I love the response time!
Well, novices that we are, I'm not thinking flies & poop & odor will be a big deal because we are very focused on very regular maintenance, but I could be misguided here too! The coop we have has a slide out tray and we plan to change the pine shavings out every two days, and the pen will be roughly 6' x 10' on a concrete slab and will be 6-7' tall so we can walk into it comfortably, and our bedroom is actually above this so we would look down out the bedroom windows to see the top of the pen roof. The pen is primarily to keep predators away from the coop instead of a place for the hens to live outside their coop, more or less. Our house has 6" well insulated walls. We truly hope to let the hens out of their pen every day to wander our 1 acre property, and so to me it doesn't seem like odor & flies will be huge, but I could be mistaken on this.
Clearly Fred doesn't want any part of this, and the other posters seem ok with the noise overall, a little less so with generic chicken mess!
Keep your thoughts coming it will help us make a good choice. Thanks bunches!