In short - you can't do a startup in Poland basing only on the Blue Card. Besides, to obtain it, you still need to find an employer who would want to hire you. And it can't be a common job of let's say a driver or some teacher - the Blue Card is given only to people with an extraordinary skills, able to do an extraordinary job. Read more here:
What conditions must I fulfil to apply for an EU Blue Card?
You must prove that you have 'higher professional qualifications', either by showing a higher education qualification or by having at least five years of relevant professional experience;
You must work as a paid employee - the EU Blue Card does not apply to self-employed work or entrepreneurs
So TRC? But what is that? I don't recognize what it might be.
If you want to register your own business in Poland, some factors must be fulfilled: /conducting-business-activity-in-poland-by-foreigners.html