Replying to A Predicament

So here the deal, i live in chicago so a large part of the winter i will be skiing in the midwest. There i will be skiing about 90 percent park. However i make at least one trip out west every year, where i ski very little park, due mostly to the fact that i have REAL MOUNTAINS with REAL SNOW to ski. I can get the K2 Seths for about 450, which handled excellently in colorado when i demoed them but i donno about back here. what ski do you think i should go for, are the seths too wide or ok?