Building my own ws2801 string

Using Arduino LEDs and Multiplexing
19

I would be tempted to use something like this

http://www.aliexpress.com/store/product/BLACK-PCB-5m-WS2811-LED-digital-strip-30leds-m-with-30pcs-WS2811-built-in-the-5050/701799_682982026.html

Cut into individual 2811 pixels at less than 24 cents per pixel each on their own little flexy board. Snip snip snip.