Creating a Monthly Investment in Crypto

So recently decided to just set up an automated investment into the crypto market as part of my overall financial portfolio. I assume it would be best to diversify amongst various coins, but should also be in coins that show the best possible long term returns. Below is my breakdown- is this the right breakdown? Are there other coins out there I should consider?

BTC – 40% ETH – 25% LINK – 15% SOL – 10% XRP – 10%

To be honest I don’t have much of a thought process on these other than they seem to have the highest upside for adoption by current real world institutions and assets. Obviously BTC effectively being the gold standard of the cryptocurrency market is why it will hold such a high percentage.

My intent is to just make an investment once a month, and just let this ride out for 5-10 years depending on where life has me at that time.

Would love to hear your feedback.