6 years for instructors...Dutch is a requirement. Out of the last 100 or so guys hired, 7 have gone to the F50, the rest 744/777/M11 as S/O.
F70 IS NOT an entry level position any more, in KLM it is ranked with 737 for pay and block.
The thing about the KLS students flying the best BA has ever seen is total bullsh**! They did a good job, nothing more.
(nb-KLS students always tend to tell the story of "Well, Jannie went to XYZ airlines, and they were so impressed it was the best interview they had ever seen, he flew the sim better than the Captain running ut, etc etc etc)
Unless you are Dutch, Belgian, speak Dutch or are an instructor, leave it be. It's expensive with no guarantees.