I'm also wondering about enough sunlight getting to all the plants. Does it still rotate easily now that it's full of wet potting soil? As far south as Trish & Dave's farm is, probably the sun gets to it enough through the summer months, but maybe not so much further north, or in spring and fall? I'm thinking of it for my kids in Salt Lake City, and I also have a friend in Connecticut that might be interested.
Please let us know how much you have to water it, (that's a lotta plants in a small space!) and as the season progressed, how the different plants did.
Won't the worms get too hot in there, in the height of a Texas summer? We tried a little worm bin at the school garden, and even in March, it got too hot for the poor worms if it had any sun at all.
So many questions, but it really does look like something that would work.