Put 50% of your investment in Bitcoin is good, but in contrary put the another 50% completelu to Ethereum is not a good idea I think, altcoin is not really reliable investment at least not yet if you want to put big money in it. You can put 10% on ETH, then put the rest (40%) on top rank altcoin like BNB, LTC or anything. Just don't put it in one altcoin.
Yes, you're right don't put it in one altcoin and investment in bitcoin is also a good option but nowadays investment in Altcoins is also a better option because this time market is in their peak. if you want to invest in altcoin then you can invest in (MZG) because I have also invested in that recently
https://tokensale.moozicore.com/