I'll be getting my tint done soon, I hope they do the brake light like yours. I wouldn't want it covered up, because it would be pretty much useless if they did that.
Several of the tinters I have seen will cut the tint on the OUTSIDE of the window, then move it to the inside for final installation. That should completely eliminate any worries about cutting the antenna/defroster wires. The other guys were right when they said that you MUST make sure that your tint isn't metallic in nature, otherwise your radio reception goes straight into the toilet. Good Luck and please let us know how it turns out.