@Harmony Fowl This is very helpful, thanks! Sounds like what I'm aiming to do. Glad to hear it works.
While you have them indoors, do you take them out of the brooder for handling and interaction/socialization? I've seen a lot of pictures on here of people cuddling baby chicks, having them perch on their shoulders or explore a little bit outside the brooder (indoors). Ours will be in the hallway, and I'm wondering if I need to put something down on the floor around the brooder for the time when they're out. Right now it's hardwood floor, so it will be easy to wipe up if they poop, but they may slide around and get splayed legs. Maybe more paper towels? Or some kind of mat?