It's good to diversify our portfolio, so it won't seem like we are placing all our eggs in one basket, from the coins you listed above I know bitcoin and Ethereum and cardano, but I don't really know the ravecoin and I would suggest you replace it with a coin that is even more promising , instead of putting that 15% in ravecoin its better to put it in Near, which is often referred to as a beta version of even ETH 2.0, you mentioned having fun, I don't think it's wise to invest in meme coins they don't have any utility, don't waste your time with them.