Are you just going to start taking French classes or you are proficient in French? If your plan is to take classes, I really do believe the crs score will come down before you are done done with TEF. But if you are proficient, why not, It can make it faster for you to receive the ITA.
I am confident that we will get ITA on or before end of January 2018.
The thing i was initially french educated all of school life..but since then i didnt practice it well.. I am sure i can do well on the reading and listening but speaking and writing will be tough so need to study it again to remember ... I thought can wait a bit if there is a chance to any CRS decrease instead of studying again and paying 200$ for the test