information on chinese hamster

[hinaichigo]

hello i was thinking of getting a chinese hamster in the near future and i would like more information about them. i would like to know:

what their personality is?
what size wheel?
would a rat/mouse cage be ok?? (if appropriate size)
what kind of toys would be good for them?
would carefresh work as a bedding? if not what kind would you recommend?

all advice is appreciated and anything else i need to know please do tell me.

thanks in advance