Don't diversify with too many altcoins. Why don't you want to invest in bitcoin? and are you holding your altcoins on Binance and leaving it there as is?
If that's what you do, for holding, withdraw it and hold it to a wallet where you hold the private keys.
Paypal is now supporting Bitcoin and other 3 altcoins. After this news, Bitcoin is on the green trend and almost every crypto lover admires Paypal and hopes a bright future for Bitcoin. Only Bitcoin holding for long term or short term is the best idea in my opinion. Diversity may sometimes gainer but i Prefer BTC holding that altcoins hold. Of course, funds should be kept in personal wallet with increasing wallet's security and private key should be kept in safer place.