Good lord thats alot of grass (lawn)!. Hell here in Vegas they don't even want you to have grass, it uses to much water and we MUST conserve water so that that the Big City Money Grabbing A$$hole Developers can build more golf courses. I say I have two large dogs and I am keeping my grass (lawn).
I sometimes put a mixture of Beer, Coke, Dish soap, Mouthwash and Ammonia on my lawn, but most of the time I use 16x16x16 or 29x3x3 before it gets to hot.