Hi Chopinesque -
You are working on quite an ambitious collection of music. I like that Mozart, and the Chopin waltz I think is pretty hard. I also dream a lot about playing certain music, but what is even better is to put the music up on your piano and just try reading through parts. When I do this, I usually say to myself, "forget it, I'll never get this one." But low and behold, after a few more run-throughs, I'm actually able to make some music out the music.
I may not ever get the piece down well enough to perform or record, but at least I challenged myself and have always learned something that benefits me in all the other pieces I play.
BTW - Just two days ago, I started seriously practicing my first Chopin etude. It's probably the easiest one in the book (grrrr - don't have the book in front of me and can't remember what key it's in) but it's a start.
Good luck with your studies.