I once did a windshield... never again. The darker tint film usually have a metallic particle in them that reflects terribly at night. can't see....
I'd do the rest limo tint (70% or more (as dark as my taillights... se my thread for pics... they look black period ) That's how I did mine. seeing out the back in the dark is tough, but the camera makes it a non-issue. Be aware, this tint could result in a ticket