How many grafts would it take to fill this

[Demitri]

I am fairly new to this:

I was going to wait until I lost more of the temples, but this loss seems to be progressing slowly. Been on fin for 1.5 years, 34 years old. I would need it on both temples, they are about the same. How many grafts? I would just prefer to get this done now, who knows if I'll be able to get 4 weeks off work in future years.