From the score, it is clear that this piece should be played at a somewhat quick tempo, but what is the character of this piece? The key of E major is a special key for Bach; when one considers his E major works such as the Inventions and Sinfonias, there is no strong emotion, sorrow, oppression, or dynamism present. Now, consider the E major French Suite. You will find that its character is by no means strong.

Then, listen to the E major French Suite's Gigue. There are similarities between that Gigue and this Prelude. Although this Prelude naturally has no tempo marking, it would be safe to consider it a piece with a relatively mild character, to be played at a tempo from Moderato to Allegretto.

Although measures 13-14 become slightly more emotional, fundamentally, try playing Bach's E major works with a fantastical, optimistic, and delicate character. Consequently, when playing eighth notes staccato, the staccato should not be overly sharp.