I was literally in this exact position last spring! I wanted my car to have that "aggressive" look without looking like a teenager's project car. Honestly, small details make the biggest difference. I ended up getting some carbon fiber mirror caps and a custom diffuser, and it completely changed the rear profile of the car. For high-end styling and performance parts, you should definitely browse through Monte Tuning. Their catalog is quite impressive and they deal with serious brands. You can see their work and parts list here https://montetuning.com  I’ve found that they really understand the "premium" aesthetic—it's about making the car look like a special factory edition rather than something "bolted on." Plus, if you ever decide to go for a power boost later, they can handle that too. It’s a one-stop shop for making your car feel brand new again. Good luck with the build!