Actually it's not good for a pianist to play romanctic pieces - play alot of Bach, Classical (Beethoven, Mozart, Haydn) and the loads of exercises. This is a great way to gain good technique. Then once earn a good technique you should begin to play romantic pieces 'But if you really can't wait i suggest you maybe wanna try some of Schumanns Phantasiestücke (Aufswung, Falbe) or play his Kinderscenen or Arabesque (it's very beautyful). Maybe Sindings - Rustle of Spring - a very cool piece too.
Er...Technique is specific to pieces. Developing a superb technique to play Bach is not going to help you play Schumann. With few exceptions, The great Bach specialists were hopeless when tackling the romantic repertory (just listen to Glenn Gould playing Mendelssohn's songs without words). In fact it can be argued that that only thing that will help you play Chopin is work on his etudes.So, playing Bach, Mozart , Haydn and so on is certainly very important. And so is playing the Romantic composers. Best wishes,Bernhard.
later, after gaining technique from his Liszt, he did superb performances of Mozart and other non-romantic composers.