I made the mistake of not getting a kit when building my TBK mini with per-key RGB. Hand-soldering what feels like hundreds of connections between MxLEDBits is not fun :/
Enjoy your keeb, it looks amazing! How is the trackball sensitivity btw?
Sometimes it feels a bit like Pokemon - gotta catch 'em all ;) Or in my case, build 'em all :D
EDIT: I would love to build a small split wireless low profile keeb like the Corne or similar, however I keep putting off my second hand-wired per-key-RGB TBK Mini which will be my main… if I ever get it done XD