IMO BTC is going to continue to trend down and settle around a range of $4,500 to $5,500 at a new psych level. Reasons are slow adoption world wide from other countries than Japan and growing competition from alts.
So far current price is @ 6.6k+ close to your forecast and if ever your foecast is true probably majority of new investor who bought @all time high will sold their bitcoin to avoid bigger loss. so many are dis appointed for the btc price but the are lot also who are enjoying to accumulate at the curreny price.