A huge thanks to everyone for all your input. Please keep adding comments, you've also got me thinking about other gear I might need.
I still want to take a closer look at the Zeagles, but the bp/w is looking good. My OW dives were in freshwater with a SeaQuest Pro QD+, Alum-80, 7mm wetsuit and 24-26 lbs weight. I'd really like to reduce the weight and bulk up front, so I like the SS bp. Could I also use the SS plate in Florida with a 3mm suit without bouyancy problems, or would I need a lighter plate?
I didn't train with a weight belt, but I'm also thinking about using one and maybe some weight pockets also to distribute the weight. I'll make sure to wear it outside the crotch strap at least while I'm learning.
I was considering a steel tank, I did some reading here and now I think that's a good plan for me also.
What about a "Pro" style harness or simple "Hog"? On the Pro, is the chest strap helpful and the pivoting buckles?