You shouldn't need a pump with that much head.  Here's the secret to getting enough flow to sprinklers. **You don't need to run them *all at the same time***. 

So if you have 4 sprinklers and only have the flow to run 2 of them happily, then simply have 2 zones. Run one until it's done.  Then run the other. 

Best to do it at night - you'll lose less water to evaporation. 

Another trick you can do is reduce (ratchet back) the run-time of the sprinklers.  Lots of people vastly, vastly over-water their lawns.  Reduce the runtime by 15% a week until the lawn starts to show distress... then increase it back up one notch.