If you want to get even crazier. Pour a layer of pea gravel(hydrostone even better) first to mimic bedrock. Add a handful of worms as well, they love wet bedrock. This will expand the rooting area when the plants inevitably need it. You can even water kelp teas or liquid organic nutrients if the plants need a supplement later. The clay should guard against huge pH swings and will retain the nutrients you lose from watering. Yes, bottom watering dissolves nutrients too. Again, you shouldn't have root rot issues.
If you add the bedrock be warned. The plants will root into it and you can't move until harvest.