I'm not sure. He looks like a challenging case.
If the lower jaw is advanced, then his face will become longer, and it's already too long. His upper jaw is very long, but the excess length is all in his nose. He probably has no gummy smile.
I'm not yet convinced that his face is too long. You wouldn't happen to have a front view photo, would you? Without an xray, it's hard to say if his maxilla is long. The upper lip region is very short, and this is what, IMO, makes his case difficult. I mean, how would its shortness be addressed? How does your upper lip compare to his?
My guess is that he needs counter clockwise rotation. His upper jaw needs to be shortened a lot and then advanced some to compensate for the impaction. His lower jaw and chin need to be advanced substantially.
Again, I'm wondering what an impaction and CCW would do the the upper lip. The lower jaw seems to be a straightforward fix.
After all of this, I still think he'd look unattractive because the rest of his face is messed up. He'd need a rhinoplasty to shorten and deproject his nose and raise his dorsal line. He also needs brow augmentation as well as an otoplasty.
I don't think he's messed up now. A front view of the nose to see its width would be helpful. But, if bimax could be achieved, I think the nose would be more balanced. I know that you like a higher dorsal line, but I don't think it's necessary on this guy. Maybe a conservative dorsal shave would look good.
I think the challenge lies in the region between the base of the nose and the upper lip. Shortening the soft & hard tissues of the nose, I would think, is not going to elongate the soft tissue of this region.
Edit to add: why the otoplasty?