I weigh 80kg and I use acid 86 2008 for lightwind with blade 5.0 and S1 5.7. I love this board with early planning and very good carving in medium waves (like you I use it with 1-2 m waves). Before I used Evo 80 but planning is not so fast, Evo 80 is less fast but have a great capacity in low waves. Evo is more easy and less technical to use.
For me my favorite board between E80 and K86 is K86