I found this info.. It was last updated June 10, 2010
There is info on many states in this document.
It is from "Legal Community Against Violence" so I'm not sure how GUN friendly they are, but the info seems to be provided in a factual nature.
I'm not sure it actually and specifically answers your question, but it sound like you need to worry more about local laws than state laws..
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To be safe, you could get a copy of the persons drivers license or CWP, but remember, since this is an exchange, they are going to require the same from you...
Unless you already have a buyer in mind, why don't you post it up here, there are a number of people on the forum in the central Florida region that MAY have what you are looking for..
Here is a general discussion I found on another forum, but nothing specific quoting regulations:
Skip the 1st post and read below it.
The High Road