I have 2 six week olds. A barred rock and RIR. I can hardly stand the dust inside anymore and would like to move them into the coop. I've weened them off the heat lamp. In the coop, I have two 10 wk old silkies. They've been out for a couple weeks now. I am in Florida and our 10 day forecast says we'll be in the low fifties to low sixties at night. Do you think it's time? The seem fully feathered except for the barred who has minimal downy feathers on her head yet.