Whoa, sweet. I've seen walk-ins with humidifiers pumping out the mist. But there's a lot of square feet to deal with. I've also heard good things about the oasis. I have the beads and they work well - low maintanence. And that might be the problem with a humidifier (which might have several variables, like pumping different volumes depending on water level, or something) on a timer - you may be spending a lot of time trying to fine tune it, when there are good products out there that'll do the trick; re-inventing the wheel, so to speak.

Finally, if you do try it, the 30sec per 2 hour ratio sounds pretty wet to me. No way of knowing though unless you do try it.

Post pics when you get cigars in that baby!