I agree with the previous post...
Ask your teacher, but here is my advice for etudes.
I have played many of them, including both revolutionary and winter wind.
Fist, op. 10 #3 is not considered a virtuosic etude and in some auditions schools actually instruct applicants not to use the slower Chopin etudes. Juilliard from what I remember may be one of those schools.
Aeolian harp (op. 25 #1) is an excellent starting etude. This is the one that I worked first. Also, the next one op. 25 #2 is not too tough...play it slower than the recordings, speed is not what makes or breaks this etude.
You could also do the black key etude, op 10#5. This one is considered one of the easier ones and it is a cool piece,though I struggled with this one for god knows how long. IT's the kind of piece that either fits your technique or doesn't.
If you like the revolutionary etude, you could also start with that one, I just learned it recently and it really isn't very hard. With the right shapes in the l.h and pedal, the technical difficulties are no greater than op. 25 #1.
But these are the only etudes in my opinion that are possible for a young pianist. The rest are so difficult, I don't think you would enjoy the process of working on them atthis point. I'm working on the first two right now...op. 10 #1 and #1 and let me tell you, it gives me insecurities about my worth as a pianist on a daily basis.
