Greetings Everyone!

I've been thinking to do a cool project for my school. I want to create a 128 x 128 LED wall display of 1 to 2 meters diagonally. I've been looking at DIY one with LED Strips or LED Matrix (ws2812b type). I think a raspberry pi can drive the display and also run the Pico-8 player software (only for playing, the editor is not needed). So far I have no idea how to do this. I know how to solder and wire the LED but they seem very expensive.

The idea is to have a giant screen outside for students to play. We can use a camera (maybe a raspberry pi 4 can also due the video AI analysis) to detect the student's movement as d-pad and buttons input. We can have a sort of QR code that will redirect students to a webpage for them to upload their game cartridges (will have to manually approve them to avoid strange things displaying on the screen publicly). This will promote students to start coding in order to play their games on the big screen.

I'm a 5th grade science and math teacher but I'm also an Electrical Engineer with a minor in robotics and automation.

Any advice will be appreciated.