Don't worry. Many people will on the way to go to work in the morning, so you won't have problems to go to the test center. I have never done T in Paris, but GMAT. I also need to wake up early to go to the GMAT test center in two weeks.
And just want to tell you one thing, maybe you have already known, that the Toefl in Paris is still paper based! Unbelievable, but it's true. I did't know about this util I entered the exam room!