whether for the purpose of passive assets for the next 5-10 years, or for active trading? if it's passive, it's better to hold bitcoin and the rest diversify to 3 strong altcoins like eth, neo and xrp only.

If you are familiar with stocks, automatically you will not be too difficult to adapt to the volatility of crypto, your step is right because after halving, maybe crypto will not return at a cheap price like now.