Which aftermarket part should I get first?

evil370z

i have a 2014 touring sports, my mod list in order
1. RJM clutch pedal - $250
2. stillen dual G3 cold air intake - $490
3. motordyne e370 exhaust with upgraded 5inch blue tips - $1900 (stock cats)
4. swift springs + SPL rear camber arms + toe bolts total was around 800ish-900
5. b2 auto design titanium spacers 20mm front / 25mm rear, forgot the price
6. i just ordered michelin pilot super sport tires , 265/35/19 front , 305/30/19 rear , their going on my stock 19 inch sport rays.
7. waiting on my shipment, carbon fiber duckbill spoiler + carbon fiber df1 rear diffuser - $1,100
8. thinking of wheels, idk what to get
9. more parts to come, cosmetics and performance

also have a gtr start button, it was like 30 bucks lol.
also forgot to mentino, z1 25 row oil cooler with all the options available
- $558
my car just hit 13k miles

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