Hi everyone! I have 8 chicks. One is around 5 weeks, 5 are about 3.5 weeks and 2 are about 1 week. I'm in Texas so we are averaging around 80 during the day and low of 65 at night. Would they be okay if I keep them in their new outside coop with a heat lamp at night starting Sunday? It's secure, has 4 weatherproof walls so no drafts and is preditor proof. They are currently in our house and are running out of room and becoming messy! Thanks in advance!