drip system set up

I'm trying to set up a simple drip system for 9 plants in soil(3gal bags). Is one line per plant enough to fully saturate the soil in a 3 gal containers. What rate of flow do you use? 1gph, 2? I planned on running one pump to 3 manifolds with 2 feeder lines to each plant with 1 gph drippers.

You could use an infinite combinations of setups... That one you have listed there would work. You just have to keep an eye on it for the first few runs to get it dialed in for your setup. I've always found slow and long helped to avoid dry spots. You just have to play with it and you'll get it perfect.

Can u suggest a pump size, I'm thinking 300, to be enough with adjustable emitters