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Milt's advice is right on.
I built a system with about 40 ft. of change in elevation and a total of almost 3/4 of a mile of pipe (the sprinkler "experts" wouldn't touch it). Your supply system will only provide a certain amount of volume. You should find out what that is and make zones that use an appropriate amount. Decide on your sprinkler type and locations - and the gallons per minute a zone will use. Then buy sprinklers that have changeable nozzles (I used Hunter) that tell you how many gallons per minute will be used by each sprinkler. You just add up the discharge amount and make your zones to use the amount your system can handle. Dividing it up in zones also makes it so that if one zone goes down, the others still function. Obviously there is a lot more, but it's not rocket science.
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Marv Evans
'69 911E
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