I need at least 2 types of chin advancement (BSSO, genioplasty, and implant), but I'm wondering if I should get all 3 (Photo)

Thank you for your picture.  In my opinion, you would benefit from a lower jaw advancement surgery (BSSRO) and a sliding genioplasty (chin advancement).  See a board certified plastic surgeon or oral & maxillofacial surgeon for a consultation.  

The first decision is to determine if lower jaw advancement surgery would be beneficial and this is based on the current state of your bite and whether you want to commit to a significant presurgical course of orthodontics. If so then a sagittal split mandibular advancement with a sliding geniopasty would be the right course. If lower jaw advancement is not an option then a siding genioplasty combined with an implant overlay would be the other alternative.

The proper choice for jaw enlargement will be determined by your occlusion (how your teeth fit). If your occlusion is problematic, sagittal split osteotomy may be most appropriate, since appropriately planned and executed, it will serve both a functional and aesthetic purpose. However, if your occlusion is satisfactory, orthognathic surgery will require significant pre and post op orthodontic therapy. Implants are usually a better option when the occlusion is satisfactory.

Hi iwotm8, From your 3 options, the least invasive method will be the use of chin implant (using the largest implant size appropriate) provided that your occlusion is normal. Sliding geniopplasty alone may not give a satisfactory result. If you have malocclusion, however, you will need to have it corrected first if it also concerns you.