Personally, I'd sand and paint the grill, and then go hit up a yard for a newer bumper (with fogs), and paint that. As for headlights, it's a personal preference. I like color-matched grill and bumper with chrome lights, but since your truck is black, the black headlights and corners could look killer.
I've color-matched my grill, and I'm still hunting for a good deal on an 01-03 bumper.
You can also check out TORKiT's truck. He's got a similar look going on, with the newer bumper, all color-matched, and chrome lights: 98-00 Grill Mod (with pics)