Hair transplant: How many grafts do you think I need?

[luka]

Hello! I am thinking about getting a small hair transplant on the sides to make my forehead more narrow. How many grafts approximatively do you think I need? Here is a picture with the area I want hair transplanted in. (same thing on both sides of course). And would the scar at the back be small enough that I could still have my hair short??

Thank you