I love the design you have made, you are very talented; however, I feel that I would have a hard time giving a permit to build it. I also believe I would have a problem with too many/tall retaining walls. There are restrictions in the city of Glendale of how much of the hill we can cut into and how tall the retaining walls can be. Other than that it's a great concept, so far it's the best one! Good luck!