As far as I am considering to this situation.
Auctually, I sold half amount of my bitcoin, and bought bitcoin cash 50/50 2 days ago
Also I sold remiaining my bitcoin once and could buy lower price 6400$ again.
My bitcoin amount is a littele increased.
But if you can wait for a long time, I think you would better to hold it.
because many people says bit coin will be 9000$ in the near future.