Are you flying from the USA to Paris? Seems that you would have to get off the plane, go get any luggage unless you're carrying-on only, and then get all the way through security/immigration before going on to the British flight. Here in the USA the international flights require us to be there 2 hrs before it leaves. If the British Airways international flight has the same requirement, you would need an earlier flight to Paris. You may want to ask Air France how long it takes to get everyone off of the plane, and ask British Airways when you'd be required to be there for that flight, and see if those numbers add up. Since they are different carriers, if the 1st one is late, the 2nd one won't wait for you. I would tend to give myself more time in between flights. Maybe a little time to see Paris too.
Have a great adventure.
-Alison