Now it's better to sell your btc, price won't be so high and won't reach up to 1k$. It makes sense if you have large amounts of btc.
Hey you never know btc could shoot up to $1k easily with the major changes! you could see it $330 and then $1000 easy as that so i would always have some in a cold wallet just to be safe but in the end it's just about gut feeling.
Bitcoin increase is not unlikely but the halving will change it quite a bit. Don't know whether good or bad.