If you are restricted to a high VLT film in your state then think about getting a ceramic film instead of a metallic one. It costs more, but will do profoundly better with heat rejection.
For example when my car was tinted I had a choice of:
20% metalized with 50% HR
40% ceramic with 80% HR
90% ceramic with 90% HR
So even the film which allowed 90% of the light through still blocked nearly twice as much heat as the more than four-times darker metalized film.