You've got a pretty good balance of stuff there!
I'd second Ravel's Sonatine - although it's a bit higher of a level, it shouldn't be TOO bad

The textures in this one make it a really good piece to do thorough work on. It's a big enough piece to stand alone, and there are so many subtle details that give you lots to work on if you play it.
Also, take a look at Rachmaninoff's G# minor prelude - it's roughly the same difficulty (has a few tougher bits in the middle), but is an awesome piece to learn and play. The G minor is pretty damn intense. The G major, C minor, Eb major and D major are also really good ones (again, they can seem complex in some spots, but aren't over-the-top difficult).
Ermm... Debussy's preludes are really good. If you don't want to do another one, then take a look at his Images. From these, my favorites are 'Cloches a Travers les Feuilles', and 'Reflets dans l'eau'.
You don't have a baroque piece from this year

, maybe take a look at a prelude and fugue or a French suite by Bach?
Chopin's Nocturnes are also really good. Op 9 #3, Op 27 #1 and #2, and Op 48 #1 are cool (and you're probably pretty good at random running scale passages over a repeated figure from the Op 25 #7)
Here are some more random pieces that are worth looking at:
Brahms Rhapsodies Op 79
Gerswhin 3 Preludes
Schumann ABEGG variations
Ginastera Danzas Argentinas
Ravel - Tombeau de Couperin (the prelude and the rigaudon are good... the toccata is amazing but probably a bit too difficult)