I had a fun car that I loved in college. I took care of it, and it was cool. There's two things that I would be concerned about as a student. First, the cost of maintaining a Crossfire vs. a lot of other cars you could own.

The tires are around $200 each.
It uses 8.5 bottles of Mobil 1 0W40 oil which is about $6+ each if you do it yourself. If you got to a dealer or oil change place, an oil change will cost more than $100, most likely.
The oil filters are about $20 each, also
The air filters are more expensive than normal.
And God forbid anything breaks. Most parts are Mercedes parts and more expensive than if you bought a Honda or Toyota by a fair margin.

If you're going to ever be in a position where you might not be able to come up with $1,000 for tires when you need them or couldn't blow $120 on an oil change when it's time... I would advise against a Crossfire.

And second, if you live in a place where there's a lot of snow the Crossfire might very well strand you as I hear it's not great in much snow. Generally, big fat tires and snow don't get along well anyway. But I don't get much here and haven't had any since I got my Crossfire so I can't say for sure. But it's a consideration.