Wouldn't Le Pen missing the second round be even better?
I you only care keeping the EU as it is now, a second round Fillon vs Macron would probably be the best news tbh.
Also the best thing if you wish to have Russia as far as possible from France (since Macron vs Fillon is the potential second round where the gap between the two candidates was the wider in polls, always between 30-40% for the past month)