Clint it sounds like you have some good info coming at you. Just as a side thought and to confuse things a little more. Why dot you go to 2 pumps and just make them a little smaller. this way you could maybe use a wave maker or simular to alturnate the water flow. For the spray bar I like using the locline stuff, its just snaps together and you caan point it anyway you want. here is a pick below
Mike