FAROUT :thumbsup:
That sounds like it will work, a couple of comments/suggestions

by running the system without plants you can figure out if you need 4 emmiters instead of 2,me thinks 4 is needed.I used 360 degree only because thats what I had,be sure to angle them so they hit the netting and not up on the solid part of the netpot

the back flow valve sounds like a good idea,but you might need to remove it if you get a syphon action into the buckets,be sure to watch out for this.

I was mistaken on my pump size. they are 1056 GPH not 633s like I thought.each pump feeds 6 buckets.
put your pump in a filterbag,rather than an inline filter,as they cut the flow way down

notice the differance in the spray systems from my first proto to what I setteled on.the first was WAY to much work/cost,all those glued PVC fittings

and no matter what folks say,you will need to keep the PPMs LOW,if they don't grow with aero they don't know

Aeroponics is not DWC/EB FLOW/FLOOD/DRAIN,BUBBLER, whatever. it is a hi order supercharged fast grow system
and you will need to stay on top of it