Continental Kennel Club papers are only good for lining birdcages, so I recommend not wasting the money.
There was a case in Southern Ontario where animal control wanted to confiscate/kill a purebred Labrador because the agent thought it was a Pitbull (the law here says that if an official thinks it looks like a Pitbull, that's what it is unless you can prove otherwise). The only thing that saved her was the owners had her Canadian Kennel Club papers proving she was a Labrador. The AKC papers can be useful if you ever need to prove ownership.
BTW, in Canada if you sell a puppy as purebred you are required by law to provide the new owner with the registration papers within six months of sale at no extra charge.
There was a case in Southern Ontario where animal control wanted to confiscate/kill a purebred Labrador because the agent thought it was a Pitbull (the law here says that if an official thinks it looks like a Pitbull, that's what it is unless you can prove otherwise). The only thing that saved her was the owners had her Canadian Kennel Club papers proving she was a Labrador. The AKC papers can be useful if you ever need to prove ownership.
BTW, in Canada if you sell a puppy as purebred you are required by law to provide the new owner with the registration papers within six months of sale at no extra charge.