Well, I can tell you that the feathers won't get better until you give them space, so I would put them out before the weather gets real nasty.  But you know your situation best.  BTW, you can put them with your chickens, they will do just fine, I keep my extra roos in a large pen with my chickens all the time.  The chickens, and chuckars pretty much ignore each other.  Also, make sure you feed them high protein.  Mine get 24% all the time.