Double check my drip configuration

Alrighty.

So, I put

GPH per plant: 4
Gallons you want to apply to each plant: 5 (They are brand new trees, still pretty small)
Inches of water applied in Flex daily schedule: 2.13
Total plants: 13

It came up with 1.70 custom nozzle type, which waters for 1 hour, 20 minutes.

Thoughts?