Thing about the Springs is they stay 68F year round pretty much. In the winter, that is exactly what you do, springs driving. Getting out of the water stinks, but once you are in it, it's great. I remember doing a dive at vortex when the outside temp was 40F. My hands were literally freezing when I was putting my rig together in the morning. I had my wife though in the first camping spot so I could run up there and jump in a tent I had setup with a heater inside to just stay warm.
I love pelham. I've always had a good time at alabama blue water. I like that they have tank stands and benches to setup on, rather nice. I do have to say though, if you need any kind of custom blend nitrox be prepared to wait for it.