Get a clear tint with UV protection, either 3m or another premium brand, its 50/50 if you have to take it off for the RTA
I just got exterior PPF from Ceramic Pro for my GTS to keep out the Las Vegas sun and admittedly I'm having pangs of regret already since it has minute but visible ripples that are in my line of sight. I'm big into clear vision (I can't stand those heating elements in SUV windshields like G63).