Generally if your WAY too full the crank shaft can dip into the oil and cause it to work harder.
However the FS DE has issues with oil starvation under hard cornering, people have been putting .5 extra oil to keep the engine safe with no issues.
Drive arround for a bit let and if it feels like shes stugling slightly then take a bit out, but I wouldnt be worried about it at all though 1 bottle extra isnt that much at all. I knew a Dude with a Mazda 6 where some how the place that did his oil change filled it twice (WTF????) The guy had no issues, He could of, but he had it checked right away when his Dip stick was off the chart. Double the required ammount is ALOT
You should put half a bottle extra oil in at all oil changes to insure you dont get oil starvation, if you ever tend to drive her with a little Spirit. Or you can join the N/A Zoom Zoom Boom club if shes pushed too hard in a corner.