RE: Evo or kombat
I'm about your weight and have an Evo 83. I can say it is really a great board, very easy and forgiving, but probably a bit slow to really enjoy on a lake. Consider it as a great wave board, but no more than a good compromise when in flatter conditions.
Of course you can't have everything. I choose the Evo knowing its possible shortcomings and I don't regret it, but my sailing is always in sea waters and my using of the Evo in flat conditions is really limited (Evo + 5.8 wave and Sonic + 6.6 race wind ranges do greatly overlap). The main advantage of the Evo is in that it does not limit my home spots wave and wind upper range despite a limited board quiver.