Drive very long WS2812B RGB strip (80 meters)
It is unreasonable to drive 8000 leds in one strip due to the massive amount of current involved and the time to update.
eg: around 50mA per led times 8000 is 400A. The strip itself would melt. You'll also need a 2kW 5V supply.
At around 24us per led for the data, you could update it 5 times per second.
Thus you have no choice but to divide and conquer. Plenty of people have driven this number of leds before, so there's plenty of information on the interwebs. There's also plenty of options for hardware to drive this number of leds.
One example is the wled project. With a ESP32 module you can drive 1500 leds in up to 10 strips.
https://github.com/Aircoookie/WLED/wiki
There's also plenty of hints on wiring and powering.