Last time I had 2 banties as pets, I also kept them inside until my husband lost his mind. They would escape their box and roost on his clothes in the closet. He made me keep them outside. I thought they would be safe in a dog kennel but things ended badly. 10 years later, he died too. I own my house and I get to call the shots. I just got 4 bantams that will be pets. I welcome all advice.I had chicks in the house for almost 3 months, they were totally fine living indoors. But the amount chicken dandruff everyday was too much, plus it killed my laptop from all the dust. Ah well.
I think your better off with just 1 chicken inside, the dust won't be so intense like having two. And the poop would be manageable.