Heh.. sounds like you got a good deal.

As for the herp room.. the things I can't live without are:

space heater (I live with people who should live in Alaska.. cold house!)

rotating fan (circulates the air to even out the heating.. temperatures throughout the room are much more even because of it.

closet/shelving for supplies (gotta keep all the stuff out of the way)

small rolling cart (this is more useful when you have a lot of snakes) On cage cleaning day, I set all the water dishes on it (I use disposable water dishes) and fill them all up, then just roll the cart around with me as I put fresh water bowls in each cage. On feeding day I have a container with all the f/t mice and rats.. again I roll it around with me as I feed each snake. It's just darn useful for carting around stuff I use for all the snakes.

The one thing I wish I had the most.. is a sink. Ah.. how that would simplify things..