I am 175lbs and 5'10 and I loved the 183's. I prefer a more playful ski and actually am riding the 176 now. I have friend closer to your size but heavier and they ride the 190's.
The 183 is enough ski mounted in the traditional spot. If I were you I'd get the 190 and mount it on the 'true center' line, even though that isn't actually true center.