Chip needed to be moved into a bigger cat. He is 9 weeks old now and has outgrown the other smaller cages I have!
He hasn't met Roxy yet, she's sleeping all day and was not interested in interacting with me, which is perfectly fine by me. This way she will turn on her "wild switch" much sooner, I believe.
He's having 2 stories of this cage to climb in now, he loves it!