I have a dozen 8 week old chicks. I'm interested in buying two guineas that are about 8 months. What do y'all think? My chickens do NOT free range, but I know I'd have to do so w/ the guineas. How would I house them? Could they go in the coop w/ my chicks or just let them hang around the house and roost in trees at night? By the way...I live in Texas so winter is not a problem.