Just thought I'd add one more little tidbit.
I kept a juvi cal king in this 10 gal tank for months with no water. The tank was half full of dirt, and I watered the plants deeply once per week. Screen cover, VHO flourescent bulbs, and a UTH under one side. The snake would occasionally come out and drink droplets. He grew just as well as his "traditionally" kept siblings. Never had a health problem in any way.
(ignore the water bowl in the picture, it was temporary)

And FR, if you read this I would love to see some pics of the setups you are using to raise those 2 kings you mentioned below without water.

