Let me make clear that the reason/s I am NOT advising the OP to pursue maxfax surgery regarding the AESTHETIC reason he's pursuing it, in particular, any advice as to what he should ask his surgeon to do toward aim or reproducing the look of a 'jut out' jaw, is because I SEE that any PERCEIVED jaw or chin recession is actually an ILLUSION directly attributable to the nose being OVERLY PROJECTED. As a knowledgeable information provider on here, it is as CLEAR to me that the nose has an overly projected ANS and also an overly prominent dorsal hump. As to how 'solid' his nose may be, it is the reason his lower jaw area looks RELATIVELY recessive to him and the reason he's jutting out his jaw in an attempt to 'balance' an IMBALANCE coming from the nose itself. So, from an AESTHETIC perspective, the act of wanting to 'balance' the jaw with an IMBALANCE coming from an overly projected nose stands to result in more aesthetic imbalance. So, I'm electing to play NO PART in giving any aesthetic advice as to how to achieve his aesthetic goal OTHER than conveying that the goal of trying to reproduce the look of a jutted out jaw is a misdirected one when there is neither recession nor lack of chin length and that it's all an ILLUSION coming from the nose. The illusion (of recession) is NOT coming from the overly acute lip to chin groove.
Other reasons include a less than 'long' chin and overly acute lip to chin groove is PERFECTLY NORMAL for someone with a LOW MPA , a very SOLID mandible and an AMPLE projected CHIN. Aesthetically, this is often referred to FAVORABLY as 'SQUARE JAW' and is something many pursue. Also, the tooth IMPLANTS don't allow for moving the implants via braces in prep for a surgery that requires moving the teeth. Add my not actually seeing bite issues.
All that said, from my POV, he's asking for advice on how he can achieve a misdirected aesthetic goal which is why I'm electing to not give him any toward that goal. Others may...as long as I'm on record here for discouraging it.