I wanted to build another keyboard and found a split 4x12 at keeb.io. I was interested because it was a white case and all usb-c (even the cable to connect the two halves).
It doesn't have hotswap sockets so if figured I could try using some mil-max sockets. I found some at ringerkeys.com for a decent price and bought the 0305 version. The mill-max sockets are small but are not too difficult to solder. I used the method found on ringerkeys. Put them on some switches that you don't care about and mount them on the board.
I didn't feel like the pcb would stay using friction alone from the mill-max sockets and hot-glued a few points from the pcb to the side plate.
Overall I like the keyboard and the mill-max sockets. I will use them on more keyboards in the future.
The Snow Caps SA keycaps look good with the white case (although I have since sold those keycaps on r/mechmarket).
Flashing QMK
There is nothing special about flashing qmk. If you are using the web configurator, just select keebio/nyquist/rev3 using LAYOUT_ortho_4x12.