I think bitcoin could well reach $2,000 - $3,000 if this $6,000 support get's broken. If you would sell now chances are high you could buy back and thus double your btc holding.
This is not financial advice, just a thought.
And this is not a good year for crypto I believe. Late 2019 we'll see some action.
I think you over concluded it, even if it broke the $6,000 mark It doesnt mean it will go down to $2k-$3k mark. Your prediction of btc price is so low and it is impossible to happen. So why sell your btc just wait for it to rise. What if btc price continue to increase. Instead you doubled your holdings it became a half because of solding it.