Your portfolio is fine as it is, you can hold your Bitcoin or go for those altcoins, they aren't bad at all, the danger here is going for new coins, anything can happen with new coins, to avoid any loss please stick with old coins and tokens except Harmony or Tezos
That's right, for those who persevere and be patient with old bitcoin and altcoin that are already top, then the benefits will always be with them, and for altcoin Harmony and Tezos are not bad to maintain, just because they are still in the new category, so they are afraid to suffer losses if maintained for a long time.