A few months ago, $1,000 for 1 ETH is considered a good price entry. Now, $1,600 seems a bit too much, in my opinion. Maybe the PoS hype is already 'priced in' for ETH. Any investments around that price range are very risky. The best course of action: DCA in 25% of your fund to this price but no more. Wait and see if it goes down, DCA in more. If not, just stay with 25% of your fund @$1,600.