A drop in price in wave 4 can also provide an opportunity to load up on longs for the fifth wave. The 0.682 to 0.5 fib region is strong support as it is just above the previous high. rules dictate that wave 4 cannot retrace past wave 1, except by a wick in leveraged markets.
On the bigger picture is almost complete a larger scale fifth wave. Besides a fifth wave extension, which could very well happen if Bitcoin surges, will soon make a larger correction after a short term rally, possibly dropping 20% from its local high.