I'll throw my 2 cents in and also recommend JDL. I have their 4-2-1 EL header and quality was absolutely top notch. I got mine Cerakoted for free as well for black friday (purchased the header when it came out BF 2018).
I actually have a very similar exhaust setup to what you are after, with a few minor differences:
JDL 4-2-1 EL Header
Stock OP and FP
Invidia R400
Add some rumbley to the below and that's what it'll sound like, basically