I believe the front vents are for the front brakes, the rears are for rear brakes and intercoolers, but i could be wrong
I am a fan of simplicity. No need to go nuts with the lines on the bumpers, and splitting the vents into two. If I had any clue on how to clean it up on photoshop I would. But don't get me wrong, it is a bad ass car. I would just tweek the bumpers.