I have 120 plants in coir. I am setting up a new drip system. I am looking for a new pump. I like the brand Leader pump. I am looking for drip line and drip head recommnedations pipe size recommendations etc. along with a recommendation for the size of the pump. I esitamate a half gallon of water per watering from a nuted water tank reservoir.
So many ways to skin a cat. I'll try to help if nobody jumps in. I use a pressurized system but there are a couple guys here that do just this so they will have a better grasp on what ya need.
I prefer multiple redundant pumps. I think the last brand I used that lasted was called Red Giant. I would energize your water supple at both ends. Use a few pumps. Each nozzle comes with a flow rate maximum. Just do the math. And add the pumps that work for you.