We are turning this hutch into a brooder for our chicks. (This is an old picture, the plastic is off of it now.) Three are two weeks old and two are about six weeks old. It's way bigger than the picture makes it look. I guess 2-3 feet by 6-8 feet. So, stupid questions time. 1. Should we block off the inside part? Obviously the heat won't get there, does that matter? Is there a "best" spot to put the heat light and food, etc.? 2. At their ages, do we need to worry about drafts? We have put it close to our baseboard heaters and the room is really warm, around 75 degrees. But it's close to an outside door too. Should I put cardboard around the bottom of the wire or will they be okay? Thanks so much! I don't know how people did this before the internet.