Is it better to have a 2-coin or a 10-coin crypto portfolio?

Which do you think is a better idea for the long term? For a while I thought that BTC was all I really needed. But then ETH started to seem like it was definitely also a crucial coin to hold. So just the two seemed like enough. But now I am thinking it might be better to have a 10-coin portfolio that is still heavy on BTC and ETH but also casts a wider more diverse net by including 8 more well known coins. But then I wonder if I would just be watering down my BTC/ETH investment with coins that are way less likely to succeed. It seems some people go with one style or the other and I am not sure which is the best way to go.

Also, depending on which you pick, what do you think of my selections?

TWO COIN:

1. 70% BTC
2. 30% ETH

TEN COIN:

1. 36% BTC
2. 16% ETH
3. 6% MATIC
4. 6% SOL
5. 6% DOT
6. 6% AVAX
7. 6% LRC
8. 6% LINK
9. 6% ADA
10. 6% ALGO

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