IAM happy with such incredible firmware for esp8266.
While making a kitchen, I have asked to mill two rows for ws2812.
I have glued there aluminium rails.
Nodemcu, power supply inside the box.
I have 294 LEDs (60 led/m, 2.45m each), divided by two strips,each connected to the power from one side.
About to embark on something similar, except I have 5 cabinets, 5 power supplies and only (at the moment) one strip per cabinet.