If I were you, sell them already. At least you have made some money from an effortless way. The price is beginning to dive. I think it will continue for some time because there is really BCash dumping right now. Even miners are leaving BCash. So be careful holding it, it might lose some value in the next days.
Don't know about the far future but the hashrate for the bitcoincash decrease from around 300phs to 150phs from yesterday to today. So, seems like even the early miners are abandoning it.
That is why the wisest thing to do for now is to sell them while it still has some value. If in the next several days or months it recovers and gain some investors and a lot of supporters then it would be wise to buy. But right now, sell. However, another issue would be how to. Some exchanges are not allowing transactions of BCash.