If the bitcoin price rise to $1000 in August, I will sell my coins. If it rises to $1000 in December, I will not sell.
Guess you didn't sell yet haha I am also waiting for it to hit 1k cap thinking it will be 2017 though oh well i have enough time to HODL my coins

So answer is i will sell at 1k
We will see major dump in bitcoins when it will touch that price as almost all users are waiting to see that price and once dump is done it will again bring bitcoin to a lower level.