What is your time frame? Anything under 24 months and I would call that speculation/gambling.

I would recommend privacy coins like Horizen and PriVCY. Maybe some Zcash or Zclassic.

With $1,800 I would put it into bitcoin now and watch for deals, it will be hard to split that amount up and more than 5 or 6 different cryptos.

Don't forget to take your coins offline with a hardware wallet or paper wallet (with backup).

Good luck to you!