Hello, I have 2 orpingtons and 2 barnevelders that will be 8 weeks old this wendesday. I live in Gainesville, FL. They've been living in my bathroom, without heat but it usually only gets down to 75 at night in there. I read that it's safe to put them outside at 8 weeks but I wanted to make sure that they wouldn't get too cold. The lowest that its supposed to get this week is 46 degrees. The coop is a converted playhouse and they have their own nesting boxes stuffed with hay and the floor is play sand. I don't want the risk of fire by putting in a heat lamp so I want to make sure they will be okay without any heat out there. Thank you!!