Right above where prof kent recommended, there a branch with a steep crotch angle. I'd tame some growth off of that and maybe plan on removing it all together next year.
Also, just to the right of where prof kent told you to cut, there some water sprouts.
I noticed the large branch where the water sprouts are, that branch looks like it's trying to be the leader there. With that branch, if it's going anywhere besides to the right, make a plan to cut it. Even the right side branch 2nd up, I'd trim some off the top. You could trim large stuff now, then trim down pencil size or so vertical growth off your horizontal arms in the summer, like early june.
I'd be tempted to whack both lowest branches left and right off. They're pretty low, and the right one want to run the show in my opinion.
IF you're plan is to make a central leader style tree, with this tree I'd look from the top, then down to the bottom to make your shape.
You know what rootstock this tree is on? IF this is destined to be small like a B9, you only have so much top growth to work with. I'd be more inclined to remove whats not your shape even more..