How hard is Mozart's Fantasia in D Minor? Could I play it?

I have this piece, and I can play, about 1 and a half pages of it so far. To give you an idea of my skills (or lack of them), I'm playing Golliwog's Cake Walk, Clair De Lune, Alpenabendrote (Theodor Oesten) things like that. I'm wondering, because I know that certain parts of Mozart's Fantasia are very difficult. Could I play it? I'm also a bit of a slow sight reader, but I can play pieces by memory as soon as I learn the notes. What do you think?