I got really tired of the dust in the house. Today we moved the girls to the coop. I used a dog play yard (10'x10') in the coop to give them a smaller area to get used to. The coop is about 14'x 20'. They are loving the space.
I put extra shavings in the center with the heat lamp. When I went back about an hour later, two of them were taking a dust bath in the deep section and were just about buried.
So I guess I don't need to worry, they settled in just fine.