Thank you all for all of the information.

We have gotten some cypress mulch and are going to get everything set up with the water bowls and other things and play with the set up a bit. We will purchase the therm/hydrom today so that we can make sure things are where they need to be. We will run it for a while so that we can tweak each aspect. This way we can get it down to a science before we even get a snake in there.

Know there will be some variables that can't be accounted for without the snake in there but it will be much better than trying to get it ALL tweaked after the snakes are in.

Also we went to a local reptile store and were told that we should absolutely under no circumstances use under tank heaters because snakes soak up heat from their backs and they are no use to the snakes. Please lend your thoughts on this statement.