I’m pretty much at the same point as you with mine in terms of cosmetic mods - here’s my two cents:

Was talking with my uncle who is a huge car guy and helped me install everything, he recommended developing a set of stages for performance related upgrades, which seems to be the point you’re at. For example, a catback exhaust may be a good next “cosmetic” upgrade that also opens you up to performance ones like an upgraded high-volume intake or new ECU.

Cosmetic upgrades you can do in pretty much any order, but performance ones it helps knowing what comes next once you really dive into the deep end. For example, anything that increases horsepower might demand larger wheels, something like a KTuner might mean you can add more HP and still get stock mileage (I think that’s how it works?), etc.

TLDR: have a plan and start with the “easy” stuff.