How many gallons is your pool ?
A two speed pump will save you money. I have a 30k gallon in ground pool, running a Autopilot SWG (cell upsized for 60k gallon pool), and a Automatic Pool Cleaner (Dolphin).
I run a 1hp Pentair Whisperflow @ 4hrs high, 5 hrs low, and it keeps my water sparkling clean and with a Clorine level of 2.5-3.0 ppm.

BTW....I live on the other side of the Grapevine and work for the utility co. offering you that rebate.