As for sharks teeth diving, the water is likely to be stirred up around Venice (~2-2.5 hours drive down I-4 and I-75), but its not going to be much worse than usual, however traffic, possible devastation and lack of gas might be a problem.
For spearing and wrecks, the gulf coast is good, but wont be fun that weekend IMO, however the NE coast could be good, maybe you want to try
Seadog our of New Smyrna. Thats about a 1.5 hour drive up I-4, they have a nice boat, no pressure diving, the trip is about 1 hour out to the wrecks, all around 80-90ft and plenty of game fish to spear. They should be able to set you up with a buddy if no-one else bites. I enjoyed my dives with them back in may.
BTW, we are going to be up your way in the middle of November, thinking of diving in the quarries, probably on the shallow end of Gilboa, or maybe Portage, but we have yet to decide definately on which quarries to hit.