I have 8 chicks that are 5 weeks. I live in a suburb of Chicago and want to know when they should go outside to their coop and run. I have two Orps, one Barred Rock, one Silver Wyandotte, 1 Andalusian and 3 Americaunas. I currently have them in a large dog cage in our house with a heat lamp at 78 degrees. We are thinking of transitioning them to the garage with a heat lamp for a few weeks; and then out to the coop, but need some advice and guidance. Thank you.