Im all about building stuff,, being an electrical contractor so i'ld like to compliment you on your time and efforts. Looks sweeto. I do have an easier way for a table set up. Buy a table, 4x8 or 3x6, and bingo ur done. Also, for a simple drip system, i ran 3/4 pvc and popped in the same groumets that u did that require 1/4" drip line. But what i did instead of drilling holes in a ring is purchase a stake that is meant to have the drip line plug into the top of it, then it shoots straight down and fills my RW cubes. I do suggest using two of these stakes for coco, for even watering, but for RW one does it. Very simple and factory made. I can get some pics if ya like. Only bummer is im drain to rez, which i think i will be changing since i have read in your thread that i can improve quality and quantity by dtw.
h