english isn't your first language, is it? no matter.
some people here might have gone thru all the chopin etudes - but you can always rework them. i'd say they are a lifetime job. i've only played 2 now - but enjoy playing less 'flashy' stuff that doesn't kill you with one wrong note. although, being able to play the chopin etudes certainly does show some skill.
if you can play the etudes - why not try the ballades, scherzos, mazurkas, preludes, and whatever else there is of chopin. jean-yves thibaudet decided in school that he would simply play chopin and whenever his teachers queried him about a rounded program - he said that he preferred to specialize.