Work / I'm a Vietnamese Student. I plan to study in Poznan for BA and find a part time job [5]

I have some question about the life of the students in Poznan. Please, help me to answer this!
1/ Can I live in Poznan with 1000zl / month? Which city is it cheaper?
2/ I plan to study at Poznan school of economics. Is it a good economics school in Poland?
3/ The tuition fee of Poznan school of economics is 2400/ year, doesn't it?
4/ Do I have any opportunity to get a part time job there without Polish? How about salary?
5/ Does Poznan school of economics have dorm for students? How much for a cheapest room/ month?
Thanks a lots for reading my thread! I hope to see the answer soon!