I have all of these coins:
ETH 40%
CARDANO 20%
POKALDOT 20%
TERRA LUNA 5%
THETA 15%
Avax: 10%
Are my coins going to last is it likely?
Anything can happen from now till five years coming so we can't determine the obvious answer to your question. But i think majority of the coins you have mentioned can surpass the five years you have mentioned to many more years coming. Ethereum is a good coin with good project developers. Ethereum has the potential of surviving even after 5 years so we can expect more from Ethereum. Cardano and Poka are also good coins which I expect more movement from them.
All the coins you have listed may have a good future in the cryptocurrency market. It also depends on the popularity of the coin and on how many people trust it when investing their money. I have firm beliefs that as long as these coins are in the field of view of a large number of crypto enthusiasts and interest in them will not disappear, they will live and bring good profits to those who believed in them.