EHAM, if you would be so kind and read all what I have written, then you would certainly see that the 16,3% tax and social contribution excempted part of the salary cover working during nights as well as on sundays and legal holidays. So no additional benefits in respect to this. That's the reason for this excemption.
LTU may have a different scheme, however the 16,3% at least used to be kind of a standard when I was flying at home. Also the figurs are only assumptions as I don't know if they can or will arrange the 16,3% excemption with the tax office or not.
Good to hear that you could join the private health insurance scheme when you come from abroad. However the law might have changed since than in this particular case. The law governing health insucrance was changed a couple of timex in the recent years and, rest assured, will be changed again in the future. Most likely in a way to keep people in the state run health insurance system.
If you can change to a private health insurance, you will be able to save a couple of hundred Euros. However this wont make it a good deal either.
LTU used to be one of the good outfits years ago before SR took over. It used to be the number one job for lots of pilots outside of LH. This changed but this is not a reason to pay peanuts, even for todays German standards!
They will find pilots, but possible not of the experience level they are looking right now.
Have a look a Jade Cargo and what's happening there. They were up for the same and failed badly. Aicraft sitting on the ground don't make a cent, they cost more than a handfull of Euros.