Greig's Piano Concerto in A minor?

I'm currently learning all three movments of Grieg's concerto for a contest and I was wondering the level of difficulty of the 3 movments. On a scale of 1-10, what would be the difficulty of each of the movements? I played Petrarch's sonnett 104 by Liszt and Chopin's "Winter Wind" etude for my last contest and was wondering if the concerto is in my skill level.