Work / How much salary required for family of 4 in Poznan to live comfortly [8]

Hi,

Please suggest and guide me, that I will be moving from Hyderabad,India to Poznan as part of my job, now I want to know how much salary required with wife and 2 kids (2nd class and 5th class), I also want to know the English teaching schools. I have total 17 years of experience in IT industry, how much salary I can ask for poznan.

Thanks,
Kalyan. C