I am hoping to bring jobs or a job to Poland, instead of the normal take take take people.
As you are looking for feedback on living in Poland and starting a business, this is a subject I am experienced in so here is my two-penneth.
Firstly save your money and invest it wisely it has taken you long enough to build your nest egg, you can get reasonable interest rates in Poland, so there may be a small monthly income for you there.
Secondly, it is always better to learn at another persons expense, so be prepared to take any job you can get in Poland and learn about Poland and its culture from the inside.
Thirdly always be on the look out for opportunity and business, when you have found a project which has good long term prospects, research and then research the market some more, you can never do enough R & D.
Good luck with the move.