I can tell you what I would do! (And have done with very similar material.) I would only do the work I am suggesting in the middle of summer, not the end. For the next six months, you can get this tree settled into your indoor environment, give it strong light, and get into the rhythm of winter/indoor watering.
I would cut this tree in half right at or above the second bend. Now all those small branches right above that are obsolete, and will need to be cut off. The bottom inch or two of trunk would be cut off the top, the top few inches of branches trimmed back, and the rest gets stuck in a pot and placed in a humidity chamber for a few weeks to root. It will make a nice mame-size bonsai with some growing. As for the base, when it sprouts all green is rubbed off the trunk except for a nicely placed shoot that will come from the top side of the chop and become the apex of the new, much smaller tree - or, with a large pot and several years of growth, the next trunk section for a similar-height but more natural tree.
But if you like the style the tree is currently in, by all means enjoy it. And leave it alone for a while.
