I've also filled my bags with these coins. Since we're in the bear season, it's good to buy top coins that are known for their potential. I agree that Bitcoin, Ethereum, BNB, and Matic are worth buying these days. 30000 USD is such a huge amount to start a crypto investment and it's better to seek assurance from trusted coins.
30k might be a big amount already for the most of us but surprisingly not for him because he is not afraid to all in it on one coin but I see that you guys are debating about that 7 coins hhmm? There is no need to stress yourself out, choosing who among the hundreds and thousands of coins on the market today but you guys can just invest based on the top 7 coin that you see on coinmarketcap or coingecko.
I prefer to look at that two sources because they are more popular and trusted than to the other coin ranking websites out there because they may not be accurate and they can place any coins according to their own liking.