I haven't played any of them but I love them all and would like to take a crack at #8. I think these are the groups. They can be re-arranged within the brackets.
[5, 4, 12] (Feux Follets, Mazeppa, Chasse Neige)
[10, 8] (Allegro Agitato Molto & Wilde Jagd)
[7, 6, 11, 9] (Eroica, Vision, Harmonies du Soir, Ricordanza)
[2, 1, 3] (Molto Vivace, Preludio, Paysage)