Lost Yooper- I decided that if I wanted to keep up on this sport in Michigan, then I'd have to learn to dive cold water. Hence, I just purchased a Bare drysuit on Ebay. I'm setting up a class for AOW shortly, which will included drysuit diving and nitrox. We're doing this over a weekend in a quarry in Ohio. I will definately take up your suggestion about the Sandusky when I get some experience-thanks!
Frog-As Lost Yooper said, doing a Hogarthian setup is no big deal. I would just suggest that you take a buddy into the pool and practice donating the long hose a few times. It's really nothing, just would be nice to practice it before you had to really use it! I found it to be MUCH more stress free than the other way. You always know that your next breath of air is just under your chin, and that you have room to manuever with a freaked out OOA diver. Let us know which way you decide to go. BTW, you'll love the streamlining with the backplate and wings. When I took my OW certification in the Caribbean, people on the boat looked at me like I had 3 eyes with my setup. But after the dive, many of them commented on how streamlined and smooth the setup looked. You will feel the difference.