Hey, if you don't mind oversummering, that sounds like an excellent solution to try. I think your main issues with Aeoniums in sunny FL would be the heat but especially the summer rainfall. Another plant you might consider for oversummering? Or maybe one to put under the porch out of the rain? I'm sure there's a way to make it possible.
The black(ish) Echeverias seem to be a bit seasonal in their growth pattern here, where temps are mild. More active in summer and fall, around the time they flower. So you might see a slowdown in coming months, nothing to be alarmed about. Be vigilant for mealy bugs on small plants... they are easy enough to spot because of the contrast.
