You cannot determine hair density on the Internet with a photo. It generally requires a microscopic exam. It is best to see a doctor for your prognosis and recommendation.
I expect that with 1500 grafts, the hairline you have outlined can be achieved with FUE. Regular FUE results in unacceptable graft damage in most patients with Afro-textured hair. I have invented an FUE tool that works well in all Afro-textured hair FUE with minimal transection ad without the need for a test. using this technique your FUE hair transplant can be successfully accomplished
Curly African Hair provides more coverage than straight hair. The pictures you provide are good but do not allow for a good estimate of grafts needed. You ask wise questions about preserving your donor hair. Donor density is something that can be assessed in person. FUE in curly hair causes far to much transection and not advisable for transplantation in most cases. See a full time hair restoration surgeon who is trustworthy and can help educate you and steer you toward a hair loss plan that will serve your long term needs.
bongo11111,It all depends on the plan and how much hair remains in the area. Rough estimate from the jpegs provided would be in the range of 1200-1500 depending on how thick you want the outcome. The density in African ancestry hair is usually less about 70 FU/cm2 but there are usually more hairs per follicle i3 3's. Hope this helps!
Bernardino A. Arocha, MD
African hair type with what appears to be frontal loss and a concern that more balding will occur in time. The area outlined by the line you drew would take about 1200 grafts to fill it in nicely. That would leave you enough hair for more grafting in the future if you need it.