Ken thanks for your response but maybe you can explain little further a few things as I read your comments.
3) Spreading lime. I have a spreader which I used for fertilizing is this good to use for the lime. I know it is like a powder rather than like a fertilizer with much larger grains.
4)Compost (big box stores). Do you mean like target, kmart, home depot, lowes?
5) I use well water but I don't know how much water comes out of each sprinkler head. I don't know the pressure that comes from the pump. I don't know how to determine how much will come out. I understand you can put a pressure gauge on the line to see the pressure. Then each sprinkler head when you buy it tells you how many inches of water come from them. But for the ones which oscolate (spelling?)and can be adjusted to deflect how far to shoot across the yard can make it hard to determine how much water gets to a certain area. Other heads just pop up and spray which not much adjusting there so I can probably figure it out for them easier. So I guess I am saying this seems like a lot of things to do to help determine how much water is laid out on your lawn. I don't have a pressure gauge and not sure how to put one on or where to by a correct one. Is there a simpler way?
Ken you mentioned "for the 2 areas you mention, 1.5" of rain is equivalent to nearly 2000 gallons. Running at 2.5 gallons/minute, it will take 13 hours-assuming the sprinklers do their job evenly." Are you saying 1.5" is too much. What do you think is enough water. I can only water once a week with the well water in my area. So maybe you can help me a little more and expand on this subject a little if you can.
7) "Big eye bugs are natural predators of chinch bugs." What are you meaning please? I not sure I know what your meaning. Like lady bugs or something. I don't know how to install lady bugs in a grassy area? I am wondering what you might be suggesting.