I don't get why you wouldn't do Chin Wing to be honest. It'll have a far greater cosmetic effect.
The added benefits of chin wing don't really concern me (better at correcting asymmetries, avoiding step-offs, and improving jaw angles). My only real concern is decreasing the convexity of my face and increasing the projection of my chin. I think genio can accomplish both of those.
Also, getting chin wing as an American is not exactly easy as I've explained in past posts. If it were offered by someone here in NYC, then I'd get it. As it stands right now, I'd have to fly to Europe and spend 4x as much. My genioplasty is only costing $4500.
I still think that genio only is a mistake. Your jaws look recessed.
I'm not sure why you'd mention this considering I'm already doing it next week and I've already discussed my decision at length. My upper jaw is 4mm recessed and my lower 14mm. I've explained why I'm not getting jaw surgery (can't afford it, don't want to wear braces, and it's a more invasive and risky procedure than I'd like to undertake considering that I'm correcting a purely cosmetic issue).
I'm not looking to be perfect. I just want it to be an improvement, however slight.