@plainsane, that's awesome to hear! Do you happen to recall the savings you had on Fixed schedules using Weather Intelligence and/or Water Budgeting features? Just curious how much more water you saved using Flex schedules.
@Modawg2k, I wouldn't rush into Flex schedules unless you have the specifics dialed in. Flex schedules will put your watering schedule on auto-pilot, but without the proper calibration they will be flying blind. Unfortunately, the old adage garage in, garage out is very true for Flex schedules.
I'd setup an establishment schedule while getting your lawn to take again. Are you seeding or laying sod? Each has different watering requirements/recommendations.