I play ladder so I counter out the Valk hehe.
As for the ammy, crafted ammy's can have up to 20FCR. 1-10% from the crafting, and they can also roll a "Apprentice" suffix to add another to. That is what dreams are made of...
Although, making a 200FCR sorc is a sacrifice, unless you have very nice lucky gear, such as a nice ammy like this one!