how will an ibook fare?

if i plan on using one of the new ibooks with 768 ram for: email, surfing the web, chatting, light photoshop work, making music and playing world of warcraft how would it run? Will an ibook suit these needs comfortably?

The iBook will handle all of those tasks just fine.
My advice, get the iBook as is from Apple, and get the RAM from somewhere else.
Best place for RAM would be www.newegg.com in my opinion.

WoW will run but not great, I would seriously suggest more RAM if you are at all serious about playing WoW on it.

you shouldn't have any problem doing what your planning with 768. of course if you can get a full gig stick go for it. like mynameis said, i've also read alot about wow not running all that great on an ibook, at least not on the max settings.