You've seen it "in-the-metal"? What more do you need to see?
That would be enough for me. I wouldn't do the bonnet though, not with a CF roof. I think you'd end up with too much CF and not enough silver at that point. One or the other, and I think since we're used to seeing black/vinyl roofs already that it just looks like it's supposed to be like that, whereas CF bonnets look blatantly different, if you know what I mean. Personally I think your car looks great, but somewhat subtle. A CF roof would maintain that, but a CF bonnet would be very "in your face".