With regards to the system that you mentioned about going to (near florida) by next Friday...I can see what could be the feature near 17N and 38W heading wnw near 24mph. Lacking mositure and speed its going could hamper the circulation. Dean already had a moist airmass and a well defined circulation and that didnt inhibit its structure.
Anyways Dean is the main concern and even if its no for Florida or the U.S. in general. Dean is what all us weather Mets and hobbiests should "Gawk" at ( if thats a word) cause this is what we all love about weather and its threatning impacts.