This excel file that one of the community members put together is the best tool for that. The problem you are going to run into is your rather large range of vegetation on the zone (I think your other post even eluded to mixed irrigation types on some zones). @azdavidr did a great job detailing how to fill out the calculator, but if you need any additional help, report back.
But, understanding that 3.5-4 hours is “normal”, and letting Flex daily handle the frequency, you’ll be in a pretty good spot. Only thing I can see from there is that you may or may not need to adjust individual plant emitter setup slightly if you find something needs a bit more/less water.