If you get a chin spoiler, then get black bullitts or FR500s IMO. It will look killer and carry on the theme, especially paired with tint and black bumper inserts.
I didn't know that you could get the gray 5 Star wheels in 04 at all. They are original correct?
I'm still in the infancy stage of my stang....the mod fund grows slow and the mod list is very long. The MM starter box is coming in the next year...along with the rims. Probably won't spend too much money on a bunch of little power mods, but who knows. Rather save for some cams, LT's, and a dyno tune for power.
I put the bumper inserts on last night, I'll update with a pic when I get home later!