Quick update here.
Just left Gunson. He pretty much told me that, realistically, after all is said and done, I’d probably go and get another silicone implant which he seems to be fine with. He told me that while my mandibular plane is very high, my occlusal plane is close to 90 degrees, which means basically my teeth are too level compared to the jaw to do any kind of CCW rotation even with decompensation. So surgery would only be advancement and fixing the asymmetry. He also recommended NOT using HA during my surgery as he said that makes it almost impossible to get an implant afterwards, so if that’s something I wanted, he shouldn’t do.