He said "dont require much technical skills", therefore the Ballade is not very spot on. Don't get me wrong, I really like that piece, but it's overplayed, reaaaally difficult and even more overplayed by people who haven't got the technical skills.
The Barcarole is simply beautiful, and not that difficult. If you nail the Grand Valse Brillate, you wont have too much trouble with the rest of the waltzes. And mazurkas are always good to play, and some more nocturnes. And you really need more preludes, you can't play the A major by itself.
Though, I think you should start playing some etudes. They are difficult, but you'll learn a lot. Take your time with them. Maybe one every 6th month or so...