What I don't get about this piece is your not supposed to use pedal apart from the last bar
I politely disagree. True, pedal is not written out until the last bar. However, I believe this was the case in most if not all of Chopin's etudes. Rather, it can be inferred that pedal is necessary or suggested by some of the notation. For example, in Op. 25 No. 10, there is no pedal marked in the exposition; instead, Chopin writes half notes in along with the octaves. We know it is pretty much physically impossible to hold onto these notes while still executing the octaves successfully. Therefore, pedal is the obvious solution.
In this particular etude that dickreuter is playing, pedal is good in
particular places, when used lightly and with discretion. For example, I would suggest using pedal in the first measure, lifting off on the first beat of the second measure. Also, with the last two rolled chords of the third measure, coming off on the first sixteenth of the second chord. After r.h. arpeggios, when l.h. has chromatic-type runs and r.h. holds melody, pedal lightly. Just so after the key change back from four flats (f-minor?) to C# minor. And also on the fourth page when both hands have those parallel sixteenth runs. There are more places throughout, but I won't take up anymore of your time and space by listing them.
I think overall this piece is sound. But if you're going to produce a CD, it should definitely be rock solid! Go through and practice slowly, with metronome, being careful to get every note clearly and correctly. Make sure your sixteenths are clear and specific. And -- I'll pass on a piece of advice my teacher gave me about this piece -- make sure you get your fingers out of the way once you play a note. We are often too concerned about hitting the next note to worry about releasing, and this can lead to muddiness and sloppy errors. Good work and good luck!