Nevermind- I finally found some previous entries on this subject... I wonder if it really matters if you go with a small enclosure, small water dish and hide or go with the entire 'room cage' with a basically a pool inside of it? If they are happy either way why would one go through the trouble of such a big enclosure? Personally I would say they are big snakes, they need big enclosures- but it seems like some have proved that theory wrong, and have had great success.
I guess I am trying to relate it to monitors which may not be applicable at all; but if you have a blackthroat that gets 6 feet long, you NEED to have a big cage, it is a big lizard. Not the same for snakes?