FCSS - Fragile Eternity Fantasy Cast

I've never done one of these Fantasy Casts before, but it is something i have thought about. Some books i can clearly picture the characters and who i want to play them. With this book i had some vague ideas, but not sure i'm entirely happy, but here's what I've got:

Aislinn - Brown hair with Golden Highlights.

Michelle Trachtenberg

I really like Michelle and think she would be good at the fiery temper and the sweet lost girl too. She's versatile and has the look.

Seth - Rebel, lots of peircings.

Trace Cyrus

I know he's not really an actor, but he looks the part and could be good.

Keenan - The Summer King

Alex Pettyfer
What can i say, perfect or what?

Donia - The Winter Queen

Amanda Seyfried
She has the sweet look and i think that she could do the winter queen thing well.

Leslie - Ash's friend,

Annasophia Robb
I love Annasophia and think she is a great actress and could play this part very well.

Any other opinions on characters, what about the ones i haven't done? I'd love to hear your thoughts.