Do you have room in your home for another Siberian? My recommendation is to go to a local dog show and hook up with one of the Siberian breeders/handler. Get acquainted and make it known that you're looking for a show prospect. If they're a good competitor, their face should light up and they'll immediately keep you in mind when they have future litters.

Ob and CGC sounds greyt, though! I was thinking about getting a CGC on my grey, but it seems as though AKC requires a prolonged Sit, which my grey cannot do.

Edited to add: I think if you're under the age of 18, you can still be a Junior Handler, where the quality of your dog does NOT matter. (Well, it actually does in real shows, but the point of Jr. handling is to choose the best HANDLER not dog ) If you hook up with a Siberian breeder, they can lend you a retired champ for you to use in Jr. handling.