Looking for a Wellington based donor

My husband and I are looking for a sperm donor to help complete our family. We are looking for someone to donate only, however we are happy to send the occasional email, photo and update about the child.
We have been blessed with two beautiful girls already. Sadly we are unable to have anymore children but are seeking a donor to help us fulfill our dream of completing our family.
We live in Wellington. We are happy to reimburse any expenses if someone is willing to travel.