I would really recommend getting two pairs. Allot of all mountain skis do okay in the park but even then you will wear out the edges making them pretty useless for anything else except powder, but as you will likely have mounted them too far forward they wont be any good for that either. In the long run it wont be more expensive to buy one durable park ski and one solid all mountain ski that fit your needs, no need to buy new either plenty of good used deals around.