Since you just started, why not use this a learning tree? Use it to wire and shape branches. Dont worry too much about the funky s shaped trunk. If you do, maybe do less drastic chops? Practice working the roots to improve nebari when it's the repotting time. As you get better, you want to spend more time on better material, and your trees should benefit too.
As for collecting deciduous trees in wild, I'd avoid air layering. Often with Hackberry and Elm, the good base is buried several inches below soil surface. I don't know about Oak or Persimmon.