64×80 mm 320-RGB LED PCB Design

I need a compact, production-ready PCB that fits 320 individually addressable RGB pixels into a ~64 × 80 mm footprint. The LEDs (WS2812C-2020 or similar addressable RGB LEDs) must sit in a precise 16 × 20 grid with a 4 mm centre-to-centre pitch... (Budget: €30 - €250 EUR, Jobs: Circuit Design, Electrical Engineering, Electronic Design, Electronics, Embedded Systems, PCB Layout)