Sorry, I "said" 2 zones in my post, but drew 3, like you said. The side yard may or may not get irrigation this year depending on money and time... I was kind of discounting the side yard in my mind currently... What's really happening is that I'm going to plant grass on the entire thing now, and eventually will turn the "shrub" zone into a perennial garden. As you can see in the picture below, the side yard and driveway are covered in overgrown bushes, basically the only thing to stay on that side yard is that white dogwood. But to get the water over there I have to run out the garage, through the ceiling of the garage, and then back outside, and add another backflow, which may/may not be feasible. So I said 2, knowing I will get the front lawn and shrub zones done at least.
I plan on using the PRS40 spray bodies, 40PSI regulated bodies, and drain valves at the lowest points on the lines, as there is a bit of a slop to the yard. I'll redraw that zones lines, because I may stub out for another shrub zone on the west side of the yard (not pictured below).