I know this might not help, but we didn't do a tour when we went. My wife is half Polish and she wasn't sure how much it would affect her during the visit.
There are certain times of the day you can go around yourself and that suited us the best if I'm honest. I think it depends how long you would like there and how much you would like to know, as just seeing some bits I feel could be enough for some people. There was parts we maybe stayed longer at than a tour, some things we didn't spend that long at.