That's it man. the level in the rez is the level in the misters. If you put a control float valve at the hieght you want your water. you can then stack another bucket on top of control rez and feed the float vavle and make the rez 5 gallons bigger. The control rez is the thing either way and easy to clean and top up. My part for that come tommarrow. I'll see if I can get pic's of the setup.

Your on the right track.