My advice is to choose several altcoins that have a low value at the moment rather than buying bitcoin which is too expensive, several other altcoins that are promising substitutes for BTC are Ethereum and the other top 3 altcoins are very promising. Many are doubtful about what is recommended on altcoins that promise long-term investment but this time I also defend some of the top altcoins.
I would combine two parts of your suggestions into one portfolio: even with fewer funds in each of the coins, a diversified portfolio, for me, is better in the long run.
No matter how stable BTC is and how much potential some alts have, it's great to have both from two worlds
