If you like the "floating" aspect of carving in powder, it may be worth looking into a more hybrid/flying-v oriented board than a full camber model.
The rocker/reverse-camber will definitely enhance that floating feeling, but at the potential risk of losing some overall control, depending on the type of snow you ride. I've found that Burton's flying-v models offer a lighter, more playful feel than the stiffer camber counterparts, which tend to feature greater edge hold for hard-packed or icy conditions.
If you ride in ideal conditions most of the time, I think going flying-V is a good route, since you'll benefit from the rocker with minimal exposure to its drawbacks. However, if you spend a lot of time on hard-packed snow or ice, then definitely stick with a full camber board.
And if you're getting your first real setup, don't forget a helmet! It's an easily overlooked component of a first-time purchase, but it's one of the most important.
Cheers! Let us know what you decide.
2014 Burton Antler 154.5
2014 Burton Malavita ESTs
2014 Burton Hails
2014 Smith I/OXs with Photochromic Lens
2012 Smith Vantage Helmet