Hi James,
The Nalu 9'6 is a great board, I have seen both Rich Bartles and Matt Lumley surf it and it rips. But in my opinion at 75kg it would still be a lot of board for you. They are both 85kg+
At your weight I would have thought that maybe the 9'ft Nalu which is also and excellent board would be a better option or the 9'3 ripper if you want a more performance shape.
Phill

