Plate Carrier Setup

Hi There! Civvy first time building a plate carrier. This will be my 5.56 SHTF setup. Just picked up the Crye SPC, since I'm built like a preteen lesbian. I want to keep things light; what are the suggested ways to affix magazines to my persons? I know I want a standard 3-mag holder on the front and to affix the others to my cummerbund. Not sure what brands or gear to get for this. I thought it was as simple as 'get 3 double taco pouches... profit' but apparently not.

Please, explain things like I'm 5 years old. This stuff is way more complicated than you can imagine to a first time builder. I didn't know what a cummerbund was until today lol. I still don't know what it is, but understand the design. I'm likely missing a ton of stuff.

Gear I have so far:
Crye Precision AirLite SPC - Medium, Multicam

Crye Precision AirLite Structural Cummerbund - Medium, Multicam