there is no right time.. just buy on the spot and forget it now.. check it next year 
i know you will have a huge gain next year.
i know you will have a huge gain next year.Agree, we do not have to think about whether the price we buy is expensive or not, the fact that bitcoin prices fluctuate tens of percent a day, we do not compare the price we have bought in a day or month, compare at least a year then we will get profit at least 350%.