Photographic evaluation has its limitations, particularly when the images are not supported with donor area capture. In addition information like age, gender, history of medical treatment etc. However , would like to help you with an outline how a doctor should approach a wise hair transplant in this case.The images suggests your hair loss is progressive and scalp visibility is making you uncomfortable, and you wish to restore the area asap, go with optimal consumption of grafts- 2800-3000 grafts. Your surgeon must keep a reasonable count of grafts in reserve for future need. And optimal is key word while graft harvesting. Consuming 4000 grafts is a higher number .