36, 180 pounds - Chin implant, Neck lift, Liposuction - what would be the best option? (Photos)

Chin liposuction helps reduce the bulge under the chin and can be done for the whole neck. Once the fat is removed the skin can become loose and saggy in some cases. It can be avoided by combining it with Thermitight which is a radiofrequency heat delivered under the skin to tighten it. Both chin liposuction and Thermitight can be done at the same time. The recovery is fast and it can be done under local anesthesia.
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Regards
Dr. Janjua

From the photos and your description, a good surgeon will offer improvement regardless of your chosen treatment. There is rarely a "best" treatment other than what you yourself want for your face, neck, and body based on information available to you, your priorities, your budget, your intuition, and your life situation. Every treatment is associated with advantages and disadvantages you must sort through with your surgeon. Trim neck and improved jawline will be accomplished by chin implant with neck lipo or necklift. Although necklift is more thorough and durable, it is a more complex procedure and perhaps demands a more technically proficient surgeon.

Based on your nice post of photos, best to have virtual consultation, but a lateral temple lift mini face neck lift with liposuction and fat grafting to jawline is indicated fee $15,000-$25,000. Best to virtual consult with.