I've got 20% on the sides and 10 or 15% for the rear. 28% is allowed (though there's only 20% and 35% tint) for the front and 15% for the side and rear. I went with the darkest in the rear cause of not having anything to hide what's in the back.

There's no inspections for FL and I've never had anyone I know busted for too dark of a tint. Keep in mind that you cannot be pulled over for illegal tint since it is a non-moving violation, you must be pulled over for something else (i.e speeding) in order for the cops to tag the "tint" on the infractions as well. So, be sure all your lights are working and you're not doing dumb stuff and you shouldn't have much to worry about it.