Hi, new here.
I'm still learning it after more than a year. Trying to play the last mvm't which is hard but it's not my primary focus as of now.
Beethoven's Op27-2 1st mvm't is a lot harder to play than it looks. It's really a cliche to play it because of its popularity and when it is played, it's usually lacking in quality. Usually, the triplet figures are treated as triplet figures over the duration of a quarter note and if it is treated this way, the tempo changes from a slow adagio to a moderato tempo. It should be treated as individual notes in a slow and solemn mood.
Because the piece is a Fantasia - no pause between movements - a lot of care must be bestowed in "attaching" the flow of the piece from movement to movement.
Second movement is a Minuet & Trio - a dance. As long as pianists know it's a dance, there shouldn't be any problems with tempo and playing.
Third movement is really fast and difficult to play. It's doesn't require Liszt-like virtuosity but still, it helps.

The entire piece can be memorized in a week. Playing it, a lot more than that.
I don't know how grade is assigned. You mean the piano music grading system of 1-8? If so, I'd say it's an 8 - after you pass this exam, you can quit piano forever! But speaking of exams, I haven't even passed grade 1.