Being that you can reach the state the maple is in with a years worth of growth.....even up there........
And the internodes are quite Long.....and (from Smokes blog) you only get buds from nodes........
I'd consider planting it in a wide shallow container ,the ground, or a colander.
Then take some air layers or cuttings of a piece with the tightest nodes right above.
Once in a good pot and soil it should take off and you'll get tighter internodes to get branching from.
Long term, well worth it.
Sorce