I would convert them to BTC. BTC is gold its going to be the best way to secure your money long term. Alt's are like change in a till.. You swap them for the gold.
but you can become rich just by invest to gold. you need something big something can go up. can rocket to the moon
If you understand what ETH can bring to you with those latest innovation I think split it out for both btc and ETH and forget it for some years then go back and see if what will the value of both investment for sure it's much bigger than you think for gold ETH have a lots to offer so with btc.