This is a really difficult subject right now. Bitcoin right now at 39,000 USD, which is almost half from its ATH 65,000 a few months back. The first problem I face right now is, do we really want to realise a loss and sell our BTC to shift into alt coins? I like the list of your alt coin recommdations,they are definitely a good investment. But are they worth to lose our exposure into bitcoins? What if another billionaire start to buy into bitcoins? The market could rally again quickly to its old levels. For now I will probably going to just hold my bitcoins. If I get new money I will invest it into alt coins instead of Bitcoin's.
Thank you for your opinion, time will tell whether it is correct or not. But the more opinions there are, the more likely it is that one of them is correct.