First person to paddle the whanganui river on a surf board

I am attempting to paddle the whanganui river from Taumarunui to Whanganui on a surf board. This 235k journey has not been done on a surf board before and will take anywhere from 10 to 14 days at a guess. I'm passionate about mental health as anyone who knows me will know and would love to do something to help raise awareness and encourage thoes going through tough times to seek help or even just open up to friends or family as well as raise funds for I am hope who provide suport (mental health suport) for New Zealands youths who need it.