Lupid,
I did not remove any of the pieces. Although that would have made the process much easier. It took me about an hour to wrap it, specially since i wanted the pattern to match from the center trim piece to the left/right pieces. Because of the curvature of the trim pieces over the headlights, these need a little more time and attention while heating the vinyl to properly maintain the pattern without stretching the vinyl and causing it to warp.
From what I saw, the center trim pieces is easy to remove. There are only a couple of screws and a clip to remove the center trim. The trim on top of the headlights also have screws that can be removed, however, one of the screws on each side is convered by the side fenders. I didn't see a way to remove the headlights without removing the bumpers, thus the reason why I decided to do it without removing the pieces.