So after evaluating the time I had left before Christmas, I realized that I wasn't going to get this shipped by Christmas. That said, I took my improvements I had made on the larger board and back-ported them to the raspberry pi zero version. There's some considerable challenges for the CM3 version: battery, heat, routing, etc. I was looking at a four or more layer board and I just wasn't excited about that. So it's disappointing but really close to being done.