Nicely done but experiment with living soil approach with 25+ gallon grow bags. And if you want trees, go 100 gallon minimum grow bag with 20lbs of living soil mixed into the bottom third. My jack herer grew to a bit over 15 feet tall and yielded 5lbs, 6.5ozs dry weight of high grade. It's twin in the 25 gallon got about 2lbs at 7ish ft tall harvest. Also, the living soil, no till approach is much less work. No need to even check ph. Just water as needed until harvest.
No soil additives, amendmentss. No fertilizing. No ph adjustments. Hell, you will likely need no pesticides or fungicides either but no guarantees on that. All you really need is good well water or RO water at 6.3 +/- ph. No public tap water or distilled water!!! Investigate, learn, expand...by harvest time in 2020, you'll be glad you did.