IMO, $1,800 is not possible. Some companies are taking advantage of the current market situation and make investors divert their investments. I am confident that Bitcoin price will grow dramatically by end of 2018. My target is around $150,000.
Anything is possible with crypto-currency. What do you think? If Bitcoin can drop 50% in less than three weeks, then definitely it can drop by more than 80% in 12 months time. So be prepared for the worst case scenario. If you remember what happened during 2014-16, then it is clear. It was a very gradual decline from around $1,000 per coin to $200 per coin.