I don't think bitcoin will crash even if the price go more down. In my opinion bitcoin will start grow on this last period of this year. Is better to hold and get more bitcoins if possible and keep it until you think it grow enough for you. I also not think bitcoin will go lower than 6000$ even if someone try to make price go lower.
Bitcoin have a bright future, it will be hard to demolish it. It is already established that even it experience some flows there will be time that it will recover and used widely.