No lights inside. We'll see how it works; it was toasty warm yesterday. I don't see water runoff being a problem. It's a garden, it seems to like water. We planted a few sweet peppers, and the locals seemed interested in jalapeños, so we left space for one and we will plant it when we get seeds. Chickens would DEFINITELY deforest the garden, so we're excited that they can't get in! Brian- the tubes is a pretty good idea and was how I was originally going to do it, but I wanted to maximize the available space under cover, and the tubes only come in one size. Originally, i also thought that stakes would be easier to pound into the ground. that was before I found out about Nas's secret pole planting method.