other problem with having more 1 Bluesound unit is the updates. I have 3 systems in my home, and had a Vault 2 in one, the Nodes in two others, and one of their boom box units in my kitchen. The updates are frequent and over time the Nodes and the boom box stopped working as one of them would be unable to complete the update-check enough threads here and you will find others saying the same thing. The updates are supposed to be optional, but several times I’ve checked the skip the update tab but it launches the updates regardless. I also wish that I had never gone the Bluesound route, but if you do it, confine yourself to just one unit, skip the whole House thing.
My recommendation is to get a NAS to rip& store your CDs to. It will work with your Node and any other streamer you pick moving forward. If you decide to go the Vault2 route as your ripper/streamer, pay close attention to back up, because if/when the VAult2 fails, you want to retain your music, unless you intend to keep the CDs.
I keep my files on a Synology NAS. I have a Bryston BDP3 streamer in one system, an old PC as a streamer in another, and I use the Vault2 as a streamer only in the third. The Nodes and the Boombox are expensive doorstops