Even the top 30 aren't safe. Maybe you should add in more Bitcoin and Ethereum as a hedge.
Why do you recommend investing in Ethereum? You understand that after the Ethereum 2.0 update all today's coins will be forcibly exchanged for new coins. I do not think that most institutional investors will support such changes and therefore when investing in Ethereum today you can lose a lot of money in the future. We see that ETH is absolutely unstable coin. Today, the best choice is bitcoin and nothing else.