Sure you can access to the lougne in terminal 2C. In my opinin the breakfast serve in the lounge is far better than the one they usually serve in the plane (I kind of hate those airplane omelettes).
There are plenty of very showers, they can unfold your clothes too dring the shower time.
Your connection time is largely enought to get the the lounge if you don't get lost in CDG.
Also they have a rest area with massge beds that are quite nice for an extra 1h nap