Looks good! Make sure you know your flow rates and psi and run the main lines accordingly. Know your maximum run lengths. Fuck spaghetti tubing because it clogs. 1/2 pressure compensating clog resistent tubes are great. I like 9" spacing between emitters. Put drain valves or removable end caps to drain lines occasionally. Running vinegar or drip clean through the lines helps keep them clog free. Sprinkler timers are awesome, but if you don't have the power of want to save money, you can use battery powered hose timers. I use 1.25" pvc mainline to spigots everywhere and use melnor 4 zone timers at each spigot to run 3/4" tubing to each zone, which is watered with 1/2" 1gph drip line. Closed loops for rows and end caps for pots. I haven't noticed a difference in pressure whether it's closed looped or not. I guess the lines are pressure compensating after all. pretty easy, just takes some math and the hassle of putting it together, but it saves an enourmous amount of time.
