So the Darkstar might be a better idea?
The Darkstar, Believer, or Turbo Dream is probably a better bet for you. As a beginner, it doesn't make sense to specialize your equipment, since you won't be able to out-ride a do-it-all board in the park or on the mountain. As you progress and get better, you may eventually learn to out-ride an all mountain board in the park or on the steeps. At that point, it's time for something more specialized. In other words, you want your ability to be the limiting factor of your riding, not your board. At this point in your snowboarding career, any board will be able to teach you a lot, so you might as well get a board that can teach you about the park and the steeps.
and maybe i should just ride shorter than the 155 i ride now?
What do you weigh?