ADA is one of the best altcoin and has a good potential in the future, so I am sure that ADA can give you a lot of profits when the next bullrun occurs, therefore I suggest you to invest and hold ADA until the next bullrun occurs, because ADA is one of the best altcoin to make a long-term investment (you can get at least 15x profit from investing in ADA at this time).
Yes it is true ADA is one of the best coins of bull run. But filling the bag with just one coin can be very frustrating for the investor as Altcoins are for short term. There are many low cap altcoins for the next bull run that can provide good profit. So should invest in multiple altcoins for bull run. The way to determine a good altcoin is to look at its future and past. There are a lot of good altcoins in the current market that have dropped around 70-80% in price for the bear season. If you invest in those coins, you will get a good amount of profit.