Okay I'm reading all of this over again and listen, why are you going to see Dr. Alfaro??
Listen, go see Gunson/Arnett and they will give you a proper, honest assessment of what needs to be done. They will also print you out a plan. They'll suggest HA paste for the jaw angles and rotating the lower jaw.
That said, I would then take that to see Dr. Sinn and have him do the surgery because he will drop your ramus to give you the square jaw and angles you want (in addition to the CCW along G/A's lines). But if Gunson/Arnett discourage you from sugery just don't do it. If they actually think your health will benefit from it, then proceed on your own account.
You're already around the 10 zone appearance wise (can't see you body which plays a factor obvs but still). You are legitimately a stunner and I don't use that term often. Beauty and G/A's analysis wrote about is so holistically related to skin quality and hair lustre and other factors --you have all that in spades. You're the complete package. If they discourage you from it, or say you're not in the health risk zone, walk away from this forum and enjoy your life. Honestly, I even find the steeper angle of your jaw aesthetically more compelling and striking than the square jaw you want. You're a beauty.