Ulf, at your weight consider something wider...3 options in order of increasing water time.
70cm freestyle hull with 7.4 freestyle sail : should be ok from about 10knots upwards.
75cm slalom hull (hyper or exocet) with a 8.x or 9.x : loads more water time
90cm formula with 9.x : every week will have good sailing days.
If you are bored one weekend and there is a light breeze come down and try them out..time we got you out on the water more often than that blue wave board allows you to
