Re: Is this a good idea?

ETH doesn't look that high right now, if you didn't sell then I would say wait for another surge before selling. But it is probably better to hold for the long-term, because ETH really is a great coin.

I'm sure he bought ethereum with an expensive price, if selling now is certainly still a loss, I also recommend waiting, because waiting for profit is certainly better than cut loss.

I actually bought most of my Ether at around 120$

Believe me, even if you take into account the current price of a coin of $ 206, then you had an early successful purchase. Of course, it would be much better if you invested in ethereum at the end of 2018 for $ 76, but nevertheless the ethereum will still go up in value and you will not only double your investment.