No you shouldn't
just go ahead and get a top end ski... This is a mistake a lot of people make. Truth of the matter is that more often than not a high end ski will actually hinder your development rather than help you progress.
Jeff if I had to make a recommendation I'd recommend a wider ski, like either a CR7 or a older HO ASX or Vengeance... These skis will allow to work on slalom skiing in and outside of the course at slower speeds without sinking.
most of the top end skis must be ridden (technique-wise) correctly on the sweet spot otherwise you are wasting your money. Not to mention they will bite you if ridden incorrectly.
Now don't take that to mean you can't be an agressive skier on the skis I've recommended. I've personally run into 35off of the Vengeance and my buddy has ski'd well into 38 on a CR7...
Ski-it-again is a great place to purchase used stuff too at great $$$... Here's a few I'd also recommend for you... http://www.ski-it-again.com/php/skiitagain.php?topic=Search&postid=SIA04175 http://www.ski-it-again.com/php/skiitagain.php?topic=Search&postid=SIA04130 http://www.ski-it-again.com/php/skiitagain.php?topic=Search&postid=SIA03181
post again if you have more questions...