Hey man. I ski at the bird all the time. You need a ski that is not only great in the powder but can deal with the crud as well. You wouldn't believe how quickly a mountain can get tracked out. Anyways I've skied the Gotama, Bibby, and Obsethed. These skis are sensational in the powder, however, in the crud they chatter like little bitches. I recommend a stiffer ski like; Katana, XXL, B Squad (Phantom), EHP, M1, or Mothership. What you sacrifice in flotation, you gain in control at high speeds! These skis destroy the crud. If you are a good skier they'll perform like a GS ski on groomers too.
Also as someone mentioned above,
Pay attention to the length of the ski. At your size a low to mid 180 ski is great for learning and getting comfortable in the West. But once you start to charge your tips are going to dive. I would be looking in the 189-193 range if you want a ski you can grow into and last you through college.