I'm planning on building a Silkie coop next spring just because I really want Silkies, but I'm trying to figure out the size the coop would have to be to make sure these chickens are happy. I'm planning on getting a rooster, just since it's sort of an ornamental flock (who doesn't want ornamental Silkies?). Now, I'm not rich, so I can't just go out and buy some huge coop and be done. So I'm looking for a cost effective design, but still big enough. So I'm looking for 3 hens and a rooster, with the exception I'm probably going to order another hen or two just for backup. What would be a good size? I also am going to make it a small coop/run combo, just because anything bigger and might as well keep it in place with cement. So, what should I do? 2x3FT coop with 4x4FT run? Suggestions?