Never hold any altcoin for long time. It is possible that the coin will be lost forever from all the market, there will be no volume at all etc etc. Because you don’t know what's going to happen within these long time. There are a lot of examples, many coins were in huge boom in 2018 altseason but they don't exist now. Even if they exist, they have no volume.
Totally agreed with Little Mouse. I did the same things during 2017-2018 season. I hold some alts which were doing very well that time. I hold them and now I rekt about that decision. That portfolio lost about 99% of the it’s value.
So if you want to think about 2025 best altcoins you have to think about a new coins which will come that time. For example recently come UNI SUSHI and some others new coin and they are take place on top 1-20 crypto according to cmc.