As far as I know there is no CS parts kit so far. The parts for the CS you need are rotary encoders, diodes (easy to find) and tactile switches. Then you need some screws and nuts, case and panels.
yes: ou are misssing 4x500K log dual feedback pots,
and header’ female connectors (2x and 3x) with crimps, to put on your cables which go from the baseboard headers to power led, fan, etc. This not mentioning header socket for lcd.