Awesome farm! I was thinking about setting one up for a couple of GPU rigs but nothing on the scale of what you're doing. I love the wifi controlled lightbulb, that's a really good idea.
Have you run into any issues with the miners since setting them up there?
The PSU's have been the biggest issue thus far. We're using the 835w IBM PSU's, one for every 2 miners. They have a nagging habit of shutting off and you have to fiddle with them to get them back up. Luckily we're getting them for between $10-$14 per, so I'm not too concerned with having to replace them. Other than that, there's not too many issues we're facing yet. Very curious to see what happens when the outside temperature starts climbing. We've had a very mild spring and haven't really climbed into the Summer temps yet (100+ f). I would imagine there will be some more tinkering in our future to combat that.
That's quite a project, and what a deal on those power supplies, $10-$14 per supply is an awesome deal!