Hi Johny
I'm 86kg and use this board as my only wave board with 5.3, 4.7 and 4.2 sails. For my weight it doesn't like using anything bigger than a 5.3....I tried it with a 5.6 but it struggled. The board does feel small when using it but my friend who is your weight uses it as his lighter wind wave board.
In terms of euro/onshore waves, it does work and has reasonable speed for jumping but not as well as say the new tempo. I find it not the most comfortable to sail in a straight line or in choppy conditions as it prefers to be on a nice wave. Once on a decent wave though it is amazing, one of the best!
I would maybe consider the 76 tempo.