Need some advice for a street car build

Ivary

I have decided to make my Z an awesome street car. I have not put money into it for a while but it runs great and it only has 66,000 miles on it. I am planning on spending 25 to 30k over the next couple years and keep driving it as a daily driver. It has a Fast Intentions exhaust with the extra long resonators. It is too loud for me, I may change the catback to Borla or just replace the mufflers with Borla Pro XS 18” oval on the FI system. I want to make it smoother, faster, and quieter, only loud when pushed. I plan on buying TEIN Flex Z, Kinetix suspension kit and Whiteline sway bar & End Links. Repainting 40th Anniversary with front lip side skirts and rear diffuser and new lights. I plan on buying Topguns supercharger kit. I need to be emission compliant where I live, we do have 93 octane and E85. I need to improve the sound deadening to reduce road noise, it has a good stereo that is hard to hear when rolling. Any suggestions to make it the ultimate street car are welcome. Edit, after seeing and hearing the Borla Catback on Z1 exhaust shootout it is off my wishlist. I did really like the HKS catback and may sell my Fast intentions catback.