Eth is good now.
you can still hold it because i just came back from 300$ again.
i panic too when the price on sept 5. is 280$
and just like that it comeback to 300$
so no worries . hold Eth.
I think it can increase but not fast so that you can hold depending on your plan, just see the volume of ETH, one of top 3 coin volume of the market. I hold 2/3 of total ETH I have, 1/3 for trading.