A 2.5" drop is in scraping territory, pretty much everywhere. You might need to be a little higher. Coilovers would be the way to do it, but adding an air cup kit for quick adjustability wouldn't hurt. Of course, that adds to the expense. Full bags are expensive, heavy, and complicated. I can't comment on their performance. Supposedly they can be as good as coils.
I'm not sure any springs exist that can drop the car that low.
If you want a full body kit, I believe that the Varis Arising II kit is the only one that uses the stock DRLs. Carbon Signal has a front lip for the 2013+ as well.
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Competition Clutch|Fast Intentions|Maxbore|NST|Setrab|Stillen|Tomei|Uprev| Z1
Avant Garde|SPC|Stance|Whiteline
Aerojacket|Seibon|Tanabe|TRS|TWM
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