If the system is properly designed, you won't be wasting water. Don't skimp on pipe size. In the days before rotor heads with built-in pressure regulators, one would simply throttle down the flow control on a zone valve, if there was too much pressure in a zone. And since I believe you are going to be using anti-syphon control valves, you do have the flow controls.
That is true but that include wind, slow, soil, etc . There is more too it then what brand of rotor.