The temperature depends on the power of the bulb, the distance from the tank and the size of the tank. The common literature says that the tank should be around 83-85F for the hot side with a 90F basking place, and 80F for the cool side in the day. Night temperatures should be around 75F. As long as you can reach those temperatures with whatever wattage of bulb will be fine. Remember not to use hot rock heaters because your snake would coil around it and burn itself.
I'm not sure about a water hide; definitely you could do that, but I've read a humid hide is enough.
Another thing, you'd have to be careful about the wood walls, which would probably deteriorate due to the warm moist environment of the living conditions. Watch out for mold and what not. Also, avoid cedar and fir woods for substrate and the walls because of the wood oils which are poisonous to the snake.
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