There are currently 16.47 million BTCs but there will much less BCC's in circulation. This is largely because pro-btc exchanges like Coinbase, and others won't be trading BCCs. And there doesn't seem to be any significant movements to acquire BCC's by aforementioned exchanges.
Migrating to ViaBTC to get BCC may turn out to be foolish if they get hacked.
If you're using your own wallet, you gotta be very careful. It's safest to keep your private key on paper, and even if you keep it on your computer, you have to keep it somewhere very secure.
If you're transferring your bitcoin to your wallet, make sure to do that before August 1st as the network might be clogged with requests.
After BCC launch, be very careful when importing your private key. Some scammers may try to create a spoof blockchain.info website and try to steal your bitcoins. It's best recommended to use your wallet.
RE: BCC에 대한 몇 가지 생각들...