You want ~1/2 inch drop (or ~13mm). Coilovers imo would be a waste of money for a such a minimal drop.

RaceComp Engineering black springs = 15mm front drop, 10mm rear drop + slightly increased spring rates. You get the drop you want without sacrificing much (if any) ride quality.

If you are definitely after coilovers for the height adjustment stay away from Pedders and grab a set of HSD HR's. Good price and plenty of adjustability for what you need. I can't comment on the ride as I dont use them personally but many members can vouch for them (price/quality/comfort/performance/etc).