Good thought about root space, I can always extend the 4" PVC a couple of inches to raise the basket some and give more room for the roots to grow.
I am going to start with drip (since that's what I know), but for
ebb and flow, I thought I could use a 2" to 1/2" adapter and use 1/2" PVC upright pipe with 2 elbows on the end with the cleanout plug to maintain fluid level and for the
nutrient return.
Kind of Like This