Yea, the strips are WS2812B ones. I'm planning on getting a 5v/10A power supply to drive them. Adding a MSGEQ7 and use it as a spectrum analyzer is also on the to-do list in my head. But hm, multiplexing would be a cool feature to the project. And, power saving too!
Have you seen these 8x8 ws2812b modules? 4 of those would make your project much easier.
I want to decide the spacing of them myself.