Well, sorry it's been so long, coop is done, I just uploaded a photo.. I started out small and got a little excited, ended up being 10'x22'.. Plenty of room!
Welcome to BYC! Very nice looking coop. I say the bigger the better! My coop, the structure alone, is about 12x16. I only have half dozen hens and five ducks right now, but am thinking of adding some Buckeyes in the spring. I have Australorps now. My focus is to finish retrofitting a 20x10 lean-to on the back of my garage to turkey quarters. I have two Bourbon Reds in my garage and they want out! LOL
Again, welcome. Be sure to post pics when you get chickens in your coop!