Lame... Where did you run into this cop? hopefully outside your normal range.
I think the law just says you cant modify from stock. but really it should specify how bright the lights have to be. so If you tint, but increase the output of the light it should be allowed.
What does the "clear windshield tint" do?
I think the window tint the fine isn't that big, its a fix it ticket, but then you have to have it removed, and have them to sign off that it was removed. That would be the hard part. not sure if light tint is a fix-it ticket.
Did he stop you during the day or at night? If having the lights on makes it less noticeable during the day. you might drive with lights on so it doesn't look over tinted. If he stopped you at night because the light output looks too dim, I would throw in brighter bulbs on the replaceable lights, and that should lower the chance of them hassling you. Also run with your fogs on at night if the front looks dim.
Overall if the light output is bright enough, It hopefully wont draw attention, and you tell them you compensated for the tint, hopefully they'll let you off again.
License plate I think might not be a fix-it ticket. If you got the feeling that it was his main concern, you might toss one on to keep you as less of a target.