I did dump all my bcc under 0.1...i advice you that I'm not a good trader at all, but I think bcc has no future, i consider it mainly a marketing operation to push segwit 2x, and i think that actual buying pressure is artificial. But seems like you have way more bcc than me, i would consider dumping a part (i.e. 70-80%) and wait till November to see what happens. Would not hold more than 30%, but that's just my opinion.