Hi there. I read up on Blooie's MHP brooding method and I'm definitely going to go that route. I will have 10 chicks, and will be brooding in my garage. There's no heat in there but it never really gets below 35 or 40. On the absolute coldest days. I plan to have them in there from day one. I really don't want them in the house if I can avoid it. I have a very large dog crate big enough for a big lab or shepherd. Can I use that with the heating pad cave inside? Is it too big to start out with? When can they go to the coop in the brooder?