Ethereum is second too coins and there should be no worries about Ethereum price. It better to stake it in Coinbase,then you can trade it into cbeth then from there it can be sold for cash or whatever. I recommend keeping it staked though, the returns are alright if you're prepared to just leave it. I'm planning to buy more and keep it staked so at least it's doing something instead of being sat about...
Majority of cryptos' market value are falling at this period due to factors and if you guys are not new in here, you'd worry not much. Part of its volatility are periods of ups and seasons wherein prices are down or struggling to uprise, just as what we are seeing at this point. If you're quite tied at the middle, then holding would be the best thing to do and avoid selling ofcourse. If you are planning to invest on the other hand, this is a good point to buy but don't expect profit in an instant. At this moment, it is still not clear when will bullish trend enter the market. So invest only what you can afford losing(as being mentioned x10 daily in this forum LOL). However if you cannot endure market downs, then wait for the trend line to be clear before you enter.