I will be starting a new flock. I need chick that can stand Chicago cold weather. I would like a flock the grand kids can pet and enjoy. Leaning towards Orpington. Thinking of having 4 hens and 1 rooster. Should I have all the same breed or can I mix the flock? What other breeds go well with opringtons? Mostly I'm in it for eggs not meat. They will be able to free range sometimes. Come with suggestions please.