Hi @KurtP I have no previous experience on the topic so I cannot answer your blunt question.
Looking under the pots I can see that a few of them have already started multiple white roots as in this picture:
and a few of them are throwing smaller roots off the elongated one as in this picture:
I cross my fingers hoping they will progress, and if they do, I will experiment how they can be moved from the aeroponic system to an airpot container before thinking about training pots or bonsai pots.
Any suggestion is welcomed.