Originally Posted by
BigLar
Not too sure about that NCE-CDG leg, though, since it's quite a distance.
Not sure what you mean by this. As long as the open jaw is shorter than each of the other two segments you'll be fine. In your case it would be BUF-LON/NCE-BUF, so you've got plenty of padding to work with on that middle segment.
As for the stopover, you should be able to do either one of the ones you have listed, but not both.