I think this is a good opportunity. Now or wait? Will there be a lower price?
I think right now you have to wait for the confirmation either of the correction getting over or continuation of the downtrend. Here you have to wait for the perfect price level where the volume, volatility and demand get to the highest point and at that time you should be entering the market by a good trading strategy and with good Money Management plan. Also, see that you are using a strict stop loss because this is the point where many professional traders get stopped out because they couldn't able to find either the continuation of trend nor the end of the trend.
I myself planning to invest in Bitcoin by dividing my entry positions into three parts where I invest a small portion of my trade investment at first and then i used to add positions as soon as the trend Strengthens and Momentum increases.