Im flying into warsaw on 10th feb and flying home from krakow on 17th early morn. Thinking of splitting my time 10,11,12 in warsaw and 13,14,15 and 16 in krakow. Looking at doing the historical war bits and then general look round and relax. im 19 yr old male travelling alone . Does this sound a good way round of doing it ? and any must do's in your opinion?