It really makes sense to put it in the center of the state, if you want to make it "Nopi-Sized". Although thats a humungous undertaking in and of itself...
I'd consider Orlando or Tampa ways, you'll get more notherners to that, as well as not making it a Miami car show, since no one ever seems like to drive 4 hours south or more.
If it's somewhere in decent drivable length, Down Shift Magazine will cover it, and it if goes through we'll put it in the next upcoming events section of the mag too. PM or Email me if you want us to get involved.