I am basically basing this idea on the Ignis Airdrop to NXT holders. I feel like it is a very similar set up, see the NXT chart below in the comments, and set your buys and sells accordingly. I have no idea about how high this will go, but there was about 1B NXT circulating at the time of the fork and only 3.3M ZCL circulating (ref: Coinmarketcap.com). At this point i dont know if BTCP is going to be listed on Bittrex, but it would make sense considering the hype behind this and that they control 80% of the volume on ZCL. Also, the "Bitcoin Private" marketing seems to be a little more superfluous than Ignis was. Note the line on Feb 24th; the dump of NXT began 4 days before the snapshot and I anticipate something similar here. might be good to sell about 4-5 days prior lock in a good short price and then buy back in just before the fork... assuming it dumps like NXT.
Obviously not investment advice. I am interested to see how this project works out and interested to see how similar this plays out to the previous NXT pump. Good luck trading!