DFS is not going ask u where do u prefer to work ,for example they offered me to work in Bremen.
Something more:
First 6 months 36k euro (simulator)
Next 8 months 60k euro (training whit OJTI)
And may be after that 100k.
I'm experienced ATC and I have been an area controller for 12 years and I have an experience whit 3 (not whit 1) Advanced operating systems
The tax in Germany is 42%. after all of that my answer was :"No tnx"