Rudager is right that the 184's are going to feel short and it's all because of the symmetrical shape of the ski. This ski is stiff enough under the foot and has enough life though that you should be stable on it. Also, i know this sounds weird but after talking to the rep about this ski and where to mount it for more of an all mountain feel i mounted mine -2cm from center and truthfully it did wonders for the stability of the ski. But yes i agree that it is going to feel short.
The other one that i might suggest is the Dynastar Slicer, brand new this year but very well made, super snappy, and very stable. They make this ski up to a 188cm. It's also well priced.
stick with the Zero, Helix, Turbo or the Slicer.
No offense to K2, but their skis are very poorly made (i'm going to get tons of shit for this one) but if you're a big aggressive skier you might as well get heli-coils right off the bat.
Pterodactyls are pterrifying...