the person who recommended I use the ball valve to regulate the pressure has been dripping for quite some time, don't think a globe valve is needed.
I am not piercing the line and running individual emitters off the line I'm running one line from the reducing coupler to the 450gallon then when I need to add other lines down the road I'll close the ball valve and tee off the 1/4" line to other tanks
That’s how I did it as well. I took a picture of how I tied into my sink line for you so it makes more sense if I’m confusing you I apologize.

The line on the right is what feeds my pressure regulator then goes through my carbon filter.
If you are running multiple drips you would have to change the design a little but you get the idea.