Am I a good candidate for sliding genioplasty? How many mm can my chin be advanced? (Photos)

I have thought about jaw surgery but it is pretty invasive and takes years to complete the whole process. I had posted a question whether I should get a jaw surgery or a chin implant (at the time I didn't know sliding genioplasty existed). I was recommended sliding genioplasty. My bite is fine (no talking problem or chewing issue but snowing). it is my side profile that I feel insecure about. I was wondering how many mm my chin can be advanced?