Definitely you should hold most of your coins (way too early for "the crash", and BTC has survived much worse), but it is not a bad idea to hedge.
If you sell and get your principle back, you won't have terrible regrets no matter what happens. In fact, if you sell some at a high, you can then buy the dips.
Anyways, Novogratz predicts it will bounce between 10k-16k for a little while, and I think that is reasonable.
There's money to be made playing bitcoin-usd swings, but if you ask me its not worth it when smart altcoin holdings can get you much bigger profits with little risk of being left behind in fiat.