Write a book about my Dad

I’m looking for a ghostwriter to write my dads life story as he’s turning 70 this February and this will be his birthday present. It will involve 6-8 hours of telephone interviews to get the stories and I deliberately want to hire a story teller rather than just dictating and transcribing his factual life story myself. Before the project begins, I’ll provide everything I know about his life so the freelancer can use some of those as pointers for the interviews/ conversation starters. I’m looking for 15,000 words and the file to be sent to be in a printable format. Looking for a freelancer who’s ideally written a biography before.