Am I a good candidate for conservative buccal fat removal & chin/neck liposuction with chin implant?

Facial characteristics especially in young people who are within normal weight limits is almost purely based on facial bone structure.
In your case your mandible is small in relationship to your maxilla.
The mandible can be subdivided into different anatomic regions. The chin or mentalis region of the mandible has a good projection in your case and that can be determined because you have a sulcus or a somewhat sharp labio mental angle.
The problem is in the body of your man develop. This causes you to have a dental overbite occlusion and this presents with your upper lip having significantly more forward projection than your lower lip.
Your chin has good projection so augmenting that it’s just going to make it stick out further giving you a deeper labiomental fold.
The correct procedure would be jaw advancement.
You do not have an abnormal fat distribution and you don’t have an issue with excessive buccal fat pads.
Removing buccal fat will set you up for premature fascial aging.
Quality results come from first to making an accurate assessment and then treating the primary problem.
Your problem is based on skeletal structure not soft tissue.
Attempts to treat this with soft tissue manipulation will give you partial improvements at best.
I suggest consulting with a few oral surgeons in your community.
They tend to be better at making facial assessments when the primary issue is related to mandibular structure.
Some plastic surgeons do cranial facial surgery. Those are typically surgeons who done the fellowship training after the residency.
There is some crossover between the two fields of oral surgery and plastic surgery.
You can consult with both specialties but you’ll find plastic surgeons tend to generally be more soft tissue oriented.
That’s fine when the problem is based on soft tissue problems.
In your case soft tissues are not the problem but instead are based on bone structure.
Getting an accurate assessment and understanding all your treatment options is the best place to start before having any procedure regardless of what you choose to do.
I understand clearly why people would be apprehensive to have jaw advancements.
That said it’s important to have a clear diagnosis before prescribing permanent and irreversible operations.
Best,
Mats Hagstrom MD