Okay, if you are absolutely, positively, would never think of getting any more chickens (yeah, right!), then the playhouse coop idea (4 by 8 footprint, double decker) might work well for you. Except build the roosting area as a 4 by 4 and give it a nice wide door to clean it out. That is what I did when I first started, and it works well for about 3 chickens, would be okay for 4 if you let them out a bit during the day. I like the fact that they have a very secure area that they can hang out outside if I am not there early in the morning. I ended up building a separate day run, then moving the coop and building a larger day run. I am pretty sure that by the end of the summer, I will have too many chickens to work with this coop, and will need to rebuild, so be forewarned!