Well, three of the four girls went broody, and no matter what I did, they STAYED broody. So I let them sit on fake eggs for a couple weeks and last night I slipped day old chicks under them. Found the roo snuggled down by the nest boxes rather than roosting with the non-broody. It was kind of adorable.
Just checked on them this morning and it looks like everything went great! Nothing but happy clucking mommas in a big hen pile with chicks climbing all over and under them. I didn't dig around to check on the chicks in depth, but I didn't see any dead ones kicked out of the boxes and the ones I saw peeking out of the broodys' feathers looked perky and content.
My non broody has carved out her own nest spot in the coop, which is sliiiiightly worrisome. Really hope the chicks aren't tipping her over into wanting her own, LOL!
Roo keeps going up to check on everyone and coming back out to talk to me about it.