a general bit of advice - musically, would be to listen to and research the authentic rhtyhm and feel of the polonaise.
it originated as a polish dance of course, and like the mazurake, chopin took the basics of the rhythmic and melodic sytle, and brought them to serious compositions.
im not sure who plays with the most accurately authentic 'polish' rhythm that chopin intended, but i particualrly enjoy the free feel of cziffra's performances, and the powerful steady juggernaut feel of pogolerich on his dvd performance of op44(my favourite right now).
listen to many styles and pick and choose which stylistic elements you would like to pick up and bring to you own playing.
happy listening
