Nice, definitely an athletic looking swing! There are a few things that stand out the most to me, and they are all related to having your weight sway back too much the backswing. This one thing causes a lot of other corrections to have to happen in the swing.
Your hips have a looong way to go to get back ahead of the ball at impact. You can also see your weight is on the outside of your right foot at the top of the backswing, which makes it hard to get any drive from the instep of your right foot starting the downswing. Being athletic, you compensate by pushing off with your right toe, which basically lifts your entire right foot pretty early in the downswing.
I'm not sure exactly what you meant by "posting up on your right leg," but you might try to feel your weight stay on the INSIDE of your right foot. Trying to feel a more centered pivot on the backswing should help with that feel. Here's a side-by-side of you with Charlie Wi. He has a very centered backswing, and it might illustrate some of these things.
This might have other good side effects too, like keeping your left foot down, and shortening your backswing a little bit.

