Elderoo... have I overlooked something that YOU see? I didn't detail the coops because they are not a part of the run project laid out... but maybe you see something I don't????
I don't want to be perceived as critical here, my friend. But I see the same potential for problems everyone else happily accepts as "normal":
What I observe is a permanent siting on a tightly enclosed area, with little to no option for alternating and refreshing the areas where the chickens are to be kept. Day after day, age after age, the same birds to be kept in the same space. It's typical, even normal.... and the root of many problems at the outset.
Sere and moonscape spaces along with waste management obsessions and "schemes" soon follow this method. Bags of lime and DE and coffers will be emptied keeping up with it all.
Needlessly, I'd like to add, as it's a self-imposed problem. I have yet to deal with any of these things, because I have tried to beat them at the gate.
So, I am considered a reluctant "crank." No secret there.
For a normal setup, it looks like you have things well in hand. Wanna have a go at something different?
Read this before you commit to your plans:
http://www.archive.org/details/eggfarmingincali00weekrich