Ethereum- Where to enter- Buy and hold trade

Ethereum accumulated almost 2 years and finally broke above 300 resistance. The price reached almost 500 and now is correction/ consolidating.
I expect a strong bull run for this cryptocurrency and 400 could be a good place for a buy and hold trade.
I expect for ETH to at least double its price in 2021, but this prediction could be pessimistic and ETH could easily pass 1k in 2021