This one of the cheapest places to order switches...
MilkTooth
I'm ordering the AKKO Dracula for me Zoom75 TIGA build when it comes in next year, so right there with your.
As for North or South facing, that isn't the switches but the PCB of your keyboard, it has nothing to do with the switch. The switch orientation (where the light comes through), is dependent on the PCB (north or south). With shine through or "pudding" keycaps, you get more RGB from a north facing PCB as the font / shine through is towards to top of the keycaps.
When the talk about RGB switches, they are normally talking about clear switches versus solid color, which allows more light to come through.