Building an addressable LED strand with WS2801 (custom pcb)

Those LEDs have a forward voltage of 9.6V (series) driven at 167mA. You'll need at least 12V to drive a single board. A better solution is to use the parallel version, however no one seems to stock those for whatever dumb reason.

But yeah, I can certainly build a board that has one of these on it, with a WS2801 and necessary components to drive the LED.