Here's how I'd spread out my investments based on the portfolio size:

Under $500: Focus on building a portfolio through airdrop farming, whitelists, presales, etc.

$500 - $5K: Start investing in low-cap assets with promising narratives.

$5K - $25K: Buy low-cap assets, new projects, and join sales.

$25K - $200K: Mix in some mid-cap assets, but still keep a lot of low-cap ones.

Over $200K: Go for some high-cap assets, but don't forget to load up on mid-caps.

No point in putting everything into Bitcoin if you've only got $1K to invest.