Huh, I just saw the post about needing to solder on the RGB controller and LEDs from the RGB kit, and I got super paranoid because I actually didn't see my RGB kit at first glance in my package.
Lo and behold, I guess my RGB kit was already soldered onto one of my PCBs, I can only assume thanks to Yuktsi. Thanks!
I'm just waiting on some parts to come in, then this board will be getting built.