The reading of the tag is not automatically on every car. This cop pin pointed you, so in that case they needed probable cause. In this case you should file suite against
the county for the expense and inconvenience.
Your charges are against the officer and the city in general, also...
I also have a cwp in fla but i also have a georgia dl if you hade a gdl you would not have any issues.the fl permit has resopricity here on carry though