Stiffer skis need to be skied with your weight forward, but beginner/intermediate skiers tend to ski "in the back seat." A ski with a stiff tail will work better if you are in the middle or with weight a little forward, but it will want to accelerate forward out from under you if you get your weight back. Also, you need to flex the ski (reverse the camber) in order to make it turn without just skidding it into a new direction. The stiffer the ski, the more energy you need to make it flex, so stiff skis may work very well going fast when your weight and momentum can load them up, but will be sluggish and uncooperative at slower speeds. The shorter your ski is, the more weight you have pushing on it per square inch, so the more easily you will bend it.
I am not familiar with those skis, but 160 is fairly short, so unless you are a real light weight, I don't think you should have any problems.
P.S. I found this info, and it sounds like they should be perfect for a beginner.
The Rossignol Cut 10.7 are all around good skis, especially for the price. They are awesome for resorts and they seem to do well in the backcountry as well. 3-4 foot deep snow seems to get the better of them however. All in all if your just starting they are great skis to buy for the price, and they can take a beating. One other thing if you do get a pair add some stickers or something because these skis are very common on the slopes, and someone will walk away with yours on accident. Enjoy.