Thanks bud.
I understand kinda how you feel. We don't have shale, but the whole damn state is just a pile of sand. The forest behind my house has great soil, but literally 3 feet away, it's just garbage. I also have a 6'x12' no till veggie garden, but getting it ready was not really worth the trouble. At least yet. I had to remove about 1' of just crap that looked like a dirty sand box littered with weed roots, no weeds, just their roots. Then I added about 2' of decomposing shaved wood, and about 1' of compost, with about 40 lbs of worm castings. I'd feed it EWC tea weekly for about 6 months, and then planted. The only thing to thrive was the radishes, and spinach. This year should be better do to having lots more organic materials, plus I've been composting my rabbits bedding for it too, HELLO NITROGEN! (alfalfa, and timothy hay with rabbit poo goodness)
I'd agree that the control of the pots is nice. Compared to my garden, it's a damn breeze. I'd love to have a green house. So you know what size your going with yet?