Lol. Easy tiger, they're not the sort of questions a man of my persona would dispatch. But in reality it's never too late, the doors it opens is infinite so will pay off in the long run.
I would personally leave them, i prefer the 2d look, not being able to look through the car. Perhaps im biased as every car i've owned has had tints, privacy too eh..
You will undoubtedly get flashed as your light is being scattered all over the show. In laymans term you have no projector in your headlight to give you a solid focused beam. Link below will show HID projector: Clicky!