Hi, 10 people will prolly give you 10 different versions, but IMHO I'd also be tempted to leave the branched you first picked (1st pic). It has a nice little movement to it. But you would have to try and get branches all along the trunk. So what I would try is to bring down the height a little bit - from the top there's a "v" shaped twigs, then a twig to the left and then another "v" shape. I would prune to that 2d "v" after getting rid of all the other branches to try an bring some budding all along the the trunk. The generally accepted practice is the first branch should be 1/3 the height of the tree so I would keep all buds above that line. Then I would let it grow out this year. I would let the lower branch grow with out trimming as the truck would get thicker below these branches and also the lowest branches are usually thicker than the upper branches. Short of putting it in the ground to thicken up, putting it into a larger pot will also help thicken it up.

In the 2d pic the first thing I thought of is Broom Style. If it were mine, I would cut all the branches in half to encourage budding and more twigs. Just my 2¢.