VA state law is 50% on the two front and 35% on the rest for cars and single car pickups. Nothing is allowed on the windshield not even a 3" strip. On SUVs, vans and ext. cab trucks you can have 50% on the two front then no restrictions for the rest, they can be as dark as you want. Again, nothing on the windshield.
Best you can do is try to get a medical form filled out. Gotta go to the eye doc and they have to approve it. Then you go to DMV and file the paper work and they will re issue you a license with the authorization on it. This will allow you to run 35% for 5" or to the AS-1 line OR (not and) 70% on the entire windshield. Also you can go to a 35% on the two front windows.
Thats the laws...that being said. I have 35% on my windshield with a 5" strip of 5% on top of that. I have 5% on my two front windows and the rest of my suburban has 5% over top of factory 20%. I have only been pulled over once for tint. Don't drive like an ass, don't drive with your system on blast all the time drawing attention to your self and work on seeing them before they see you and you should be fine. I have gotten really good at spotting cops a couple blocks away. Doesn't always work but i bet I saved my self tons of tickets by just watching out for them.