What is the consensus on the concerns about getting the roof and windshield tinted?
Also, with windshield and front windows, check your state's laws on visible light minimums. If you violate it, at least you know.
For heat reduction, I think the most important number is TSER: Total Solar Energy Rejected. Find the specs on which options you're considering and compare. I'm leaning toward 3M Crystalline, but that's because I want as light-colored a treatment as possible commensurate with heat reduction. Here's the 3M link: https://www.3m.com/3M/en_US/company...ystalline-Series/?N=5002385+3292716668&rt=rud
Here's what appears to be a reliable Photosync spec sheet: https://www.allprowindowtinting.com/wp-content/uploads/2015/12/photosync_datasheet_072114.pdf Note the "after SAC activation" notes.