The roots are pretty normal from the trees Ginseng I have seen. Its a pretty quick grower from what I understand and is usually pruned in spring, with undesired shoots being pinched off during the growing season. These are often grafted, with smaller leaf varieties grafted to larger leaf (and more robust) root stock. you would want to pinch off any shoots below the graft, but i can't tell if your tree was, in fact, grafted...

Personally, I would pinch off the new shoots from the chop area, and thin to just 2 branches for now (at the next prune) to start to develop further taper in the trunk. the current trunk ends pretty abruptly...

TL;DR - I would just treat it like a ficus.

I have no experience with these trees, so take my opinion for what its worth ;)