Difficulty with the study

After practicing the study in class for a few days, today i tried to play it at home, with accompaniment, so i could get all the details first. i was starting to have difficulty at bar 17 and 18, because the notes are higher and they are 16th notes, meant to be played at a faster speed. I was especially having trouble going from the f to the e, because it was difficult to move my fingers quickly and adjust my mouth. At bars 27 and 31 with the sfz i had trouble trying to play a strong accented note due to the pitch of the note. Dynamics i need to still add in because right now i am focusing more on notes and rhythms. I know speed will come with practice. I also listened to the accompaniment, and found it was much faster then i had expected. I think i should spend more time on practicing the piece without the accompaniment for now and then add it later, so i can focus on the details of the piece.