Kkruel55 might want to talk to Baker Nissan (Baker Tuning) here in Houston. They have full Amuse Kits in stock...i can vouch for this since i was there yesterday and saw all the Amuse and Top Secret that they just had come in. Ill send you a PM with contact info.
To answer your question tho, i would get the front, rear and side skirts, and as you said, ignore the wing, but if your still looking for a wing, take a look at Kognition Designs.
http://www.kognitiondesign.com/