Well it’s not ‘unrestricted’ if it’s 3 years is it?
A future employer may not be sufficiently interested in that limited timeframe.
Considering a renewal is not guaranteed.
Im not trying to be an appendix, just pointing out.
It sounds like you’ll be giving up on a lot of money and I don’t know if that’s wise.
Money doesn’t garantee happiness but it’s still better to cry in a Mercedes then sitting at a bus stop.
When are you eligible for upgrade?
Can you bid back to back schedules that give you a longer time off ?
When are you eligible for German citizenship?