I don't think that it will go above $5 by Christmas. I think cryptos will trive in an unstable environment; at the moment fiat currencies are all being sucessfully managed.
If Brexit destabilizes the pound and that has a knock on affect to other currencies then this could be a point at which the cryptos will see movement. However, I am not sure that this will be a big enough crisis. Perhaps if the petrodollar breaks we will see change????