Alright. So, got an LED to work on the breadboard, so it's clearly something with the board, not sure what though.
I am aware that a pour will lower impedance, so I am working on widening the power traces that run underneath the LEDs. Thank you for info on the data line resistor and the power supply capacitor. I will incorporate that into the design shortly. I will also fix the "DIG" trace now that I have my power traces running underground, so to speak.