Try to spread your coin to a variety of tokens, maybe try invest to ETH, EOS, ADA and other top tier cryptocurrency so that you'll be safer. But if you're a risk taker try to invest to an ICO because it offers more profit than investing to existing coins. The decision is up to you bro.
If you are into long term holding, you should choose a good coin and I agree with the coin you mentioned.
$20,000 is such a good amount and we can expect that you can see a x10 profit at least in the long run, but still depend on our target.
I wouldn't really put everything into Crypto and would choose a regulated asset such as stocks or mutual funds to keep most of my funds safe. You can put probably $2k or $5k into a 'worthy' alt coin but the fact that it isn't regulated means that you should be cautious with your money.