I like it. I love the dance feel you have going, and the accuracy is very good. S
It does seem a little flippant, though. A little humor and vulgarity is fine in a piece like this, but remember that this is Romantic music, not 20th century. Everything still had an element of elegance then--the Heroic Polonaise, at least in my mind, is the epic tale of a warrior who has gone to valiantly war for his family, his friends, his people, his culture, his country, against an insidious enemy who threatens to destroy everything he holds dear. This is at the center of Chopin's thought in his Polonaises, since he was physically unable to join the army and fight for Poland himself.
I think a little more control and restraint, a little more legato and measured forte (and mezzo-forte) would increase the drama by a whole lot. The few places where you do bring down are like a breath of fresh air. I recommend closely listening especially to Rubenstein's version of this. He finds the perfect balance between wit, passion, and elegance.