-snip-
My suggestion will be to Keep a maximum percentage of BTC, and a nice amount of USDT so that you can buy if the market dumps. and you can choose some altcoins which is more potential.
Such portfolio management is quite safe, because it does not only focus on just one coin.
Bitcoin may be the main one, but having USDT spare money will be very useful when the market suddenly crashes and can buy again at a cheaper price.
I also always apply management strategies like this and for other Altcoins I choose are ETH and some of the top Altcoins that have good development for the future.
And for other allocations, I usually look for some memecoin or new projects that look potentially (but not for the long term) just as a lucky asset alone with an allocation of maybe only 5% or even lower.