Work / Born in Denmark, want to teach English in Poland - possible? [5]

Hello my Polish friends. I am a 21 year old male born in Denmark to Polish parents. I speak and write Polish, but rather poorly, especially grammartically.

I want to learn more Polish, so I can eventually work in Poland as an English teacher, because I feel like I want to improve my Polish but also help out other people in learning English, as I know Poland is really advancing as a economy and maybe there will be a huge demand for English teachers?? I have a few questions regarding that..

1) Should I read Polish in university? Or English? (My English is fluent, but perhaps having English on the diploma will open up more job opportunities

2) How does my idea sound - a native Dane teaching English in Poland? (Maybe they only want native speakers, maybe it's a silly choice or outright stupid because of low pay or whatever)

3) How are job opportunities regarding English teaching in Poland in a few years (4-5 years), will there still be a need for English teachers?

And finally, if you can give me any advice or tips regarding my choice, I'd appreciate it! I'm not 100% determined on it, in fact I'm quite confused and doubtful :(

Dzienkuje bardzo,
Fred