Work / Net Salary for comfortable life in Wroclaw [14]

Dear Group members,
I found lot of information about living in Poland through this forum. Thanks for the same.
Currently I am working in India and in final stages of signing contract for working in Poland. I intend to come with my wife and kid (1 year old).

Please let me know what would be a good/ reasonable net salary (and gross salary) for a comfortable life in Wroclaw, Poland.
From various forms it seems 3,300 zł would be bare minimum disposable income for survival but in case I want to take periodic holidays, live in furnished 2 bedroom flat etc, what would be a good net salary?

- Also at 10000 - 11000 gross salary, what would be a tentative tax and insurance deduction?
- Apologies for an unrelated blunt question (but this is something really important for me) Is there a possibility where like Germany something crazy happens in Poland and politicans decide to open the doors for Muslim immigrants from Syria etc in near future? independent.co.uk/news/world/europe/poland-refuses-to-take-a-single-refugee-because-of-security-fears-a7020076.html