Best way to begin building a cryptocurrency investment portfolio?

I’ve been talking about digital currencies for a while now and finally want to actually invest some real money. I have about $500 ready to go and plan to add more funds later on. My current plan includes spreading investments across Bitcoin, Ethereum, Kaspa, Chainlink, Avalanche, and Solana. What do you think about these choices? I understand that Bitcoin should probably take up the biggest chunk with the rest divided among the other coins. Any advice would be helpful.