In my opinion, aside from BTC and ETH, I will invest also in ADA (Cardano) because I think the value of ADA grows right now instantly. I believe also in XRP to surge its price in this year. Other coins I hold right now is newly in the market and I think it does not have yet the capacity to move up.
if you analyze the market and certain coins, you can find very sharp jumps in the price of 35 or 50% up. Examples include Repux and Card, although the projects have good potential, but what is happening in the market makes me a little scared.