Looks like I'll be resoldering resistors and using jumpers! No prob really. Thanks for the help.
Why? These aren't like normal LEDs, you don't need current limiting resistors. They have built-in controllers that current limit.
I'd also recommend instead of just using a bare WS2812B LED, but a 1m strip of them and cut off one unit from the strip. The board itself will give you rigidity and a way to affix the LED to the PCB so that it can shine through the area of the GON foot that it should. Empirically, the Duckfeet LED pads were duplicates of the top row pads at both ends.
Keep in mind, the alu bottom had a hole drilled for the light to shine through. If you want this to work right, you'll probably have to drill a hole in the same spot. Since you're wiring the data line in parallel, you'll only need to bring over three lines: Din, Vcc, and Gnd. Don't wire Dout from the top row into the Din of your LED, wire Din.