actually the day is already too late. because the bitcoin price has reached 4,500 $, but we will not know whether btc will be pumped up again? it's better to start than we just become spectators
As long as the number of users keep on increasing, we can expect the exchange rates to remain stable, or to go up. So right now, it is not a bad time to purchase Bitcoins, provided you have liquid money with you. And also, there is a very real possibility of a pump occurring in November, when the block size limit is set to increase.