KLM used to have(and maybe still have as well as LH and Virgin) young pilots flying the big whale on the right seat...IIRC around the 90's i made i trip on a KLM 747 with the PIC around her medium 30's and the F/O on her 20's...Good luck 747Pilot
PS: Tip»»»Try a nice "Relation" with someone's at Pullmantur