@peterd, it sounds like you’ve got things well under control for a multiple Pixelblaze setup. Just wanted to add an option, if you’ve got time too look at it.
If you:
- have access to grid power, or some other high capacity power source
- don’t require wireless connectivity between LED sections (you can run physical wires from your computer to all your LEDs).
- are going to be using an RPi or other full-on computer anyway (a 4 would be ideal, but 3B+ could do the job as well)
- are familiar with the Processing environment, or can deal with a little Java.
Take a look at: