What do you think about the idea of moving the 3 week old chicks brooder to the coup with the chicken door fixed closed and a 100watt incandescent white light hanging. Not a heat lamp. The night time temps get down to 4 deg with an after noon temp of 10 deg. I am going to use a layer of kiln dried sawdust to help insulate the floor (not cedar). Is it to early to put them outside? i have read alot of mixed reviews and just wanted to ask a pro.