Tim, no offense, but you're not fully cave trained. Many of the sites in Georgia, Tennessee, etc are not appropriate for newer cave divers. Blind T's, twisted #18 nylon line, line traps, etc are probably more common in those places. Even though you've been certified as a C1 diver for several years, and you've been dry caving for several more, until you complete your cave and deco training you probably should stick to the tourist caves. That means the common NoFla sites and some of the Missouri ones in terms of the US.
Sump diving is a completely different beast, regular cave training does not prepare someone for those conditions. Most cave instructors (myself included) lack the experience necessary to teach someone the intricacies of sump diving. If you're interested in that kind of stuff, I'd recommend working with a few guys that live, breathe and eat that stuff.