I second that on the magniflow mufflers! Not too loud, just the right deep throttle tone. Keeps her from sounding like a modified Honda :0)
As for the cold air intake...I would advise not going cheap. Get one with a fully integrated heat shield, not just a cone set-up that will pull hot air from the engine bay and perhaps even water (yikes).
As for the high performance coils, they are a bit of a waste of $ IMHO. Heck go all the way and supercharge it! That will blow your hair back for sure...(after the air intake and exhaust of course) Then bring it by my place, cause I wanna ride in it :0)