If you want longevity I'd go with Monero. IMO it's by far the most undervalued coin in the market, it offers some of the best privacy features in the market, and when privacy and anonymity actually become features that the general public will look into once cryptos reach mainstream status, there's no doubt that Monero will be the number 1 option.

Since you're pretty much holding some of the best alts in the market, I would try to get rid of the shitcoins and simply increase your stash in ETH and LTC, you can't go wrong with either if you're looking for solid coins with longevity.