If you've only taken ADV and Nitrox you need to probably take the Rescue course along with an O2 provider course of some sort. You might even want to go ahead with Divemaster before Tech.
Then,
If you are interested in Technical Diving; go talk to local people in your area. Interview some instructors and find one that you are compatible with. Sitting around comparing PADI vs. TDI vs. Naui vs GUE vs IANTD won't get you anywhere. A good instructor can take any outline and make a good class out of it. Find an instructor who has done and is doing the dives. Then look into an Advanced Nitrox class and take it from there. Do you dive a Drysuit? You'll need one and you'd better be very comfortible in it and with it's use.
There are lots of very good instructors in FL and you aren't that far from NC wreck country. Heck, we've considered flying to NC from Alaska to dive wrecks.
Don't be in a big hurry, 65 dives might feel like alot but when you are talking decompression, mixed gases, double tanks plus deco bottles, drysuits, reels, bags, spare this, spare that, 65 dives ain't nothing.
Most of all are you ready to spend a boatload of cash? cause you're about to. Just gas for a single dive can cost $100 or more.
Typical basic equipment list:
Double Tanks , Manifold, Bands,
2 High Performance Regs,
BP/W
Can Light
Argon Bottle an Reg
Deco Bottles and a reg for each one. plus rigging
Drysuit
Reel
Spool
Lift bags
SMB
etc. etc. so on and so forth, the list is endless. You can spend $10,000 without blinking an eye.
It all sounds really romantic but in reality, it's alot of hard work and very expensive not to mention cold, dark, and easy to screw up and get yourself killed.
Dave