Traveling from ATL-CPH (Copenhagen, Denmark) in Y class; currently have no status however after this trip will put me as a FO.

It seems that my only choices are

1). flying air France the entire way (through CDG) to AMS

2.) flying delta from ATL-CDG. Then air France from CDG-CPH

3). Flying delta from ATL-AMS. Then KLM from AMS-CPH.

Times and prices for all are essentially equivalent.

Any recommendations on which airline/route to choose?