I think if you can get it to be two feet tall, it'd be comforatble enough. Will they be indoors only? You could get diapers and let them roam around the house if indoors only?
I have a logistics problem now too. I had one roo and 3 hens, now I've added two roos. I don't know how I should house them either! I had planned on putting them all in one space, then the NYD hatchalong was too fun to resist, and I added two roos, LOL. I'm pretty sure I won't be able to put them all together especially since they didn't grow up together... so what to do??!! I could pair them up 1 hen to 1 roo, but that requires 3 new coops and runs! Ugh!
So yah, difficulties ahead!!! LOL