So long as the brooder box has walls high enough to block any drafts it doesn't matter how windy the rest of the garage gets. Two brooder lights is a good idea - esp if you plan on keeping them outdoors in the garage. I would use a red brooder light with the metal reflector. They aren't much more expensive than a regular light bulb and they are designed specifically for brooding. You can get them online or at any feed store. You can get the pine shavings at any feed store - you can get a good sized bundle for around $5. I get mine at TSC or Southern States depending on what else I'm shopping for that day. Free is always good though so if you can get it from your neighbor free then by all means. I know cedar shavings are bad, but pine is fine. I use pine shavings in my brooder and then the actual coop just gets whatever gets raked up off the lawn on dry days. leaves, pine straw, grass clippings etc. So long as it's dry I'll use it. Haven't had any complaints or problems yet.
