Hi, Had one question about my small Welsummer flock. I have three 18-week old hens and have room in my coop for two more. I'm thinking of adding another couple of hens but am unsure if they will get along with the established hens. Can anyone advise on whether this will be a problem? Would it be more of a problem if I bought two new, different breed hens? i was thinking of adding two Plymouth Barred Rock pullets. Or should I stick to Wellies? Thanks!