This is a no brainer. Hold both your BTC and BCC.
This is true only if you value fiat more than bitcoin. If not, only important consideration is how many BTC you'll buy by selling your BCC. If BTC appreciates faster than BCC then your "hold both" strategy is losers choice.
If you can predict BCC and BTC price 6 months out you should already be a rich retired trader who does not need to hang out on crypto forums:)