Okay, I am really, really, really hesitant to say this, and I extra hate to be the first one to say it after I've let a day go by hoping someone else would.
But I just don't think carbon handlebars are a good idea for a non-racer.
If the only bars that really fit you don't come in alloy, well, then, by all means go for it.
But. Not only because you're a new rider, because anyone can tip over. Carbon tends to be fragile, and unlike a frame, in a crash or even a low-speed tip-over, handlebars tend to take the uncushioned brunt of it. Break your handlebars and you may be able to limp the bike home very carefully with one brake, or it may be completely unrideable. Break them on a tour and you're SOL.
JMO. And let me reiterate that I do not believe that crashing or even tipping over is inevitable, and I strongly object to people who say that it is (because I think that puts an idea into people's heads that make them not work as hard to avoid crashing). That's why I hated to be the one to say it. But if you crash or tip over, you want to minimize the damage to your bike as well as your body. I wouldn't have them on my bike, and that's the reason.
"I felt [the women's Olympic marathon] was as important as women having the right to vote, because talent, strength, and capability cannot be fully realized if there are no personal rights to allow them to be visible or be deemed significant in the first place." - Kathrine Switzer, Marathon Woman