RE: Evo or kombat
Evo is a pure wave board. I have the 07 80 which I love in the surf. But for flat water for your weight, the Acid 80/88 is a good board. Any trad wave board is 100 % on crazy flatwater chop and high winds. The JP FSW 85 is also a magic board for what you want and your sail range. I use the JP FSW 98 from 4.7 - 6.5. I am 85kg. Cannot comment on the Kombat.