If you only want your plant to be 3 to 4 foot by harvest then We put them in 10 gallon tubs. With 6 gallons water. Your air is way overkill but will work fine. I don't know about the screen, roots could get all tangled up in it. the pvc with little holes sound good. The real point is to just have the air to the water, it doen't matter where. It's a matter of topping up and changing water every 10 to 14 days. Right up to about 4 weeks into harvest is when we see the plants use the most water. Even then it takes about 2 weeks for us to top up 6 gallons and then change rez right on time. I think the bigger rez will only waste nutes. You need to keep the roots hanging down in water or they will dry out. Other than that please get a PH meter, they are well worth the money. We check ours every day but only have to adjust when we change rez mostly and when we top up alot. End of harvest and that's only 3 to 4 weeks.

You could maybe fit more of the ten gallon tubs with 6 plants each in a grow also. We have 6 ten gallon tubs with 6 plants each in a 4 x 5 x 8 foot room with a 1000 HPS. It's tight but 3 tubs come out and 3 go in every month. Sea of Green. I has taken a long time to get to this point. Alot of work.