Arizona tree and shrub scheduling

As the title states I’m in zone 9a Arizona. I haven’t seen any threads regarding a 9a zone. We have clay heavy soil and a riser with a emitter manifold and 1/4 in line no emitter at the end. I went to do a daily flex and it asked suggested 3 hours which is way to much for our soil any suggestions? I would love it and forget it to be home I just want to make sure it’s set up properly.

Thanks in advance