Wouldn't be too hard to add fogs later just take the fender liners off, getting to the wiring after the bumper is already on would be the hardest part I would think.
I have it hanging on the car right now until I can get the trans cooler in and the HID's this week. Feels like it needs about 3/4" of foam on top and 1/2"-3/4" on the front to fit tight. I'm going to buy some closed cell 1" thick rubber/foam to put on and then bolt it down.