I didn’t have them at the time I asked about the frame.
Now that I have tested them a bit I’m less convinced that I want a 4 CMC frame. I find that the optimal setup for my needs is to have two at each side of the keyboard. Unsure if I will take the time and make two frames or if I will just live with the cable spaghetti. If I decide to make a frame I will post my results here.