Congratulations to you and your mom! You are getting a great ride! Will you learn to drive with this car? At which age do people in France get their drivers license?
I think the most important thing when buying a new car is to get acquainted with the service department. Find out how much experience the mechanics have with servicing the Crossfires. A lot of dealerships don't have a clue when it comes to Crossfires here in the U.S. Make friends with your salesman. That way, if you have problems, he may help to get things done because he's (or she's) going to want you to come back to buy another car from him (or her). They want your return business and good service is the best thing to have for repeat business.

Is this a 2005 coupe? We don't have parking distance sensors in the U.S.A. At least the dealers didn't know of them when I bought my '05 Roadster.

Have great fun in your new car!