Whoa, no way dude. I'm 6ft and also 150. And I might get this ski. haha. I myself would go with the 177's. The 184's would be too long because we don't way a ton. When ever i've asked a shop they always tell me like 178, 177, ect depending on the ski. I would call a shop and clarify just to be sure. My time between rails and jumps is evenly split so i'd do 177, but maybe if you just do jumps you'll want the 184. Ask a shop.