I second MadJak’s points. Buying used will save you a lot of headache later, although you may still be able to find a good deal on a new 2008. Window shop a little to get an idea on what you can expect to pay, work out how much you are willing to pay and when you go to buy DO NOT GO ABOVE THAT (unless you completely fall in love with a bike, then fudge it a little).
Also, Jeff has a great suggestion with taking a rider training course. In most states the MSF course is a good choice, some states have their own training course. Most of the time the course will replace the ride test, sometimes the knowledge test too. In every case a rider training will lower insurance rates.
You have chosen a couple of great bikes there, but don’t overlook the older Ninja 250’s, they don’t have quite as good performance as the newer ones, but they are the gold standard for newbie bikes.