You already had a bad experience with alts so why go back and start dealing with them again? Forget about alts and go all in on BTC.

Btw, for how long are you planning to hodl? Did you set a price target at which you'll consider cashing out? Hopefully you won't cash out at 20k because the profits will be minimal (if you're buying such low amounts). My advice: hodl for the long-term, 5-7 years or maybe more.