At this point I believe you should only invest in bitcoin in order to minimize the risk though less profit. You can see that the market is in the long-term down cycle, the prices of bitcoin and altcoin are falling very strongly, altcoin also fell much stronger than bitcoin prices. ETH is now down to the $ 200 level and I believe it will be able to drop to the $ 150 mark next time, so you should only invest in bitcoins at this time.