It's so good to hear someone ask for info rather than just do something first and deal with problems that may arise later.
Here's a place to find all the specifics about your cavy and ideal bedding (kitty litters may be made of different things)
http://www.guineapigcages.com/bedding.htm
If you have any other questions or need for details, check back ok? I think this is going to be one very lucky piggy!