Could I have a sliding genioplasty? (Photo)

I would like to improve my jaw. My concerns are: edge of chin not aligned with bottom lip, skin underneath chin is not "tight/smooth," jawline to ear looks "soft" not "defined," overall weak appearance. But, I like the definition of my cheekbones from the front & do not want to lose that appearance. Currently finishing ortho treatment for an overbite/overjet. I would like a rhinoplasty eventually, but the chin comes first. Am I a candidate for this surgery? What is the cost estimate? Thank you!