Jennifer, I’m not in sunny California but I have found that paying the extra to get ceramic type film tint that blocks IR (infrared or heat) is well worth the cost. The Clarity has a lot of glass front and back that is closer to horizontal than most cars and has a pronounced greenhouse effect. It reduces the heat build up in the car which makes it nicer to get in and quicker to cool down, helps preserve the dash plastic, and reduces the AC load which may help a tiny bit with range.
Getting a high quality tint from a reputable shop with a lifetime warranty from the mfg and not the shop (who may go out of business) is worth it if you keep the car long term.
Hope you enjoy your Clarity as much as the rest of us are.