Like everyone else, I found Bob's storage capacity estimates to be pretty close. When you're mixing cabs and dress boxes of various sizes, it really comes down to your own ability to organize them in the most efficient way.
I live in the desert where humidity averages around 10% most of the year and the set and forget system works flawlessly, though in the summer I do have to add water weekly.
The only mod I made to mine was on the recirc system. I have double cooling units on mine due to the high temps we get, and the fact that when I'm not around the house can get up into the eighties and nineties. There's a collection tray under the cooling units that feeds condensate back into the reservoir via a tube. Bob positioned the reservoir at the back of the bottom shelf, so I had to remove boxes every time I needed to add water to it. I lengthened the tube so I could position the reservoir at the front of the cabinet. Makes adding water a whole lot easier. But if you don't get the cooling unit, it's a moot point.
