I suggest, you should hold BTC and if you can invest in XRP,TRON than you should buy little amount for long term, you can buy ETH but little amount , the best advice is to hold BTC.
The two types of coins have a close relationship to having a high price again because you can see if Bitcoin has a price increase it will have an impact on Ethereum. I will choose these two coins to invest in large amounts because they have great potential from other types of coins.