Here's an option for you, that won't break the bank.. 18x7 and 18x8 TorqLite's by American Racing. I can do wheels and tires for way less than your budget. (Like 500 dollars less!) What do you think?
Another option might be the Steet Smart Line from Billet Specialties:
These run about 1500 for the wheels, and with tires, we can get you damn close to, or just under your 2k budget for 18's. Let us know...