With that amount i think it will be too risky if i recommend you to invest in coin outside of top 100 cmc so i just want to give you top coins which is Polygon or BNB you can choose from both of them, while you hold the coins you can stake it into binance exchange so it will be very profitable for long term.
As for the top choice at CMC, I think it would be very complete if he wanted to choose six coins at this time, what you suggest is not bad and I also agree with what you said, but could add four more coins such as Cardano, Ethereum, Polkadot, and don't forget one more thing that is Bitcoin.