Can I get bimaxillary advancement for cosmetic reasons?

I had two upper premolars removed as a teen for an overjet. I'm not happy with how my lower jaw is so short and would like more jaw projection and I could use some opening up of airway too. I have braces right now to fix a crossbite. I might have minor sleep apnea and I have been told I have a deviated septum. My ortho right now said if at the end of my braces if I'm not happy I could go right in to bimax surgery. Is it easy to get this for cosmetic non life threatening reasons?