What do you want in the end? Short? Tall? Fat trunk? Skinny Trunk?
If it were mine, I would move it to a larger ''grow out container'', probably an Anderson flat because I have them laying around. I would spend the next year or two or three working the root system so I could get rid of that awkward root, and pot the tree somewhat more upright. At the same time I would encourage as many as possible low on the trunk suckers to run wild. At the same time, any branch above the second bend in the trunk I would keep pruned to just one or two new internodes each year. Reason is to fatten up the lowest segment of trunk. Let those lowest branches run to 5 or more feet long.
Then after the root system is fixed. And it is possible to get it to set level in a pot no deeper than 3 inches, without having to mound the soil up. Then you can cut off all the branches to just a bare trunk and then start training the final set of branches.
That is what I would do on my bench. There are many options. That is the reason I opened with the questions about what you want. The trunk and nebari are the very first, and most important consideration for most deciduous trees. Work those two aspects first with little concern for branching. For most deciduous trees, the branches for the ''finished tree'' so to speak, will almost never be any of the branches that were present when work started on the nebari and trunk. Often final branching is not worked out until 5 or more years after trunk development begins.
