I am currently preparing to install a sprinkler system in my front yard. My question is this: I will be running a 1" main of poly piple. I will have (4) Hunter I20 heads operating about 2GPM each. The I20 has a 3/4" NPT connection point. I really liked the "Funny Pipe" for use in connecting the heads but I am not certain if it will provide enough flow to the head. My supply will be coming directly off of my well pump and will be operating at a pressure of near 55 psi at the head of pump when pum...