Dental Surgery Help, Need Some Sort of Help?

The Orthodontist said i needed to get braces a bite block AND surgery.. if i get the surgery then it will fix my 80% over-jet and i wont need a bite block, but i want to know what my jaw will look like after my surgery, because the are basically going to move and change the position of my jaw, and with the shape of my chin i dont want to look weird. Also the reason im even considering it is because if i choose to accept surgery, ill get surgery AND braces for free, usually it costs thousands of dollars so i need any help deciding that i can get. because my looks are too huge of a deal, im only human and i only live once, so what do u guys think?

Suggestion:

If they cut into your jaw from outside your face, you *might* have a scar. I had an abdominal operation and the scar remained for months, but:

You may be able to grow a beard to hide it.
They are often good at cutting in a place where the scar is less noticeable
AFter several years, my scar is much faded–almost invisible
You are younger, so you may heal faster.