I think you need to be aware of how to pace yourself, which is an art in itself. I have many pieces that I really love, and many of them are difficult. I love Faure Ballade, Chopin Etudes, Debussy's Images, etc. Now, I could have just go ahead and jumped into them, why not, I should be playing pieces that I truly love. However, piano learning does not work that way. There is a plan you have to follow. Even the most gifted of the pianists have to go through the basics. You need to be well developed in other aspects of piano playing, and this needs time and patience.
When you go to conservatories, trust me, no respectable teachers are going to allow you to work only on difficult pieces. In fact, all my friends in conservatories told me during their first few years, all the teachers assign them are simple Mozart, Scarlatti, Chopin, etc. This is to build a strong repertoire foundation and also to develop their musical understanding progressively. Of course, some of the more egoistic make a big hoohaa over it because they are not allowed to play pieces they really like. But, if you can't appreciate and understand the simpler pieces, how can you understand the more difficult pieces. I think it may be good for you to visit a conservatory and play for a teacher, so you can get a constructive feedback on how to build yourself up as a student.