Lets start with what I have before we get into what I need. I have a 6" well, 85 feet deep, PVC casing and water level is about 60 feet down, maybe less. I haven't neasured since the local farmers stopped pumping ground water. I am looking at options for pumping water to run my lawn sprinklers from this well. I would like to have a steady 70 PSI, GPM I can adjust around with how many sprinklers run at a time. And I'm not sure how much Toro/Rainbird impact sprinklers use but I have 34 of them in operation now with more to come.