A more detailed log-scale chart also points to the same conclusion that the peak before any 27 month crypto winter would be at least $40k – $50k, with a possibility for $100+k:

https://www.tradingview.com/chart/BTCUSD/BzKoYDVE-BTC-Let-the-shorting-Begin/

That chart also alerts me to another possibility, which is a several months correction from the current level or $40k – $50k level, and then the final blowoff peak at $40k – $50k or  $100+k respectively. IOW, the start of the long crypto winter could be delayed into 2019 or 2020.

In any case, I think it is best to HODL now. I doubt the current level is the start of a 27 month crypto winter.

P.S. given the potential gain for BTC from the current level is ~3X (or maybe 5X at an extreme to $100+k), the altcoins are likely to moon soon and gain on BTC, because most of them have 10+ X gains potential before the next crypto winter.