You can use the calculator set up by @azdavidr here to calculate that out, now that we have the zone set back up with realistic parameters…can you go into the soil moisture section under each of the zones, click more detail and tell me what Rachio wants to put down in total inches and let me know what that is (the number circled below)?
Also, give me an idea what the average canopy size is in each of those zones so that we can get an idea how many gallons we should be putting down per watering to optimize plant health. This table comes from the Water Use it Wisely website, and is really designed for us desert dwellers.
Like I mentioned before, with the way yours is set up, this isn’t going to be an exact science since you have adjustable bubblers putting out a different GPM, and on top of that, a large mixture of plants and shrubs with very different watering needs.