David, when you say your hairline doesn't exist any more, do you mean that it used to be a straight hairline and now it recedes a bit at the sides?
Because in the pictures, you look like you have a perfectly normal amount of hair.
The guy in the picture of how you want your hair to look has a completely different shaped head & face, hair texture and hairline.
In my opinion, his hair & hairline would look completely wrong on you.
More than replacement hair, what you need is to grow your own hair and then see a really good hairdresser and discuss style options.
I really don't think you are ready for a hair piece.
Sorry.