Get the car and enjoy it. The AC will not be a problem. I live in Tennessee and the AC cools the car very quickly and I have not put the tint on yet.

When you get the car put it in Eco mode and you will never know the difference. I have no idea what it does, but my car is cool w/ it on so I assume it is helping the MPG and to me it doesn't cost me anything.

Also w/ the length of your drive and the reasonably high speeds your mileage will easily be over 32. I am getting about 37 in my 5 mile commute that never reaches highway speeds (usually less than 35 mph). On the highway I usually get 40+ mpg.