Should I diversify into other "Crypto Currencies"?

No. There is only one Bitcoin, the blockchain based token that has been collectively agreed upon to be money, i.e., a store of value. Other "crypto currencies" do not have open distribution (in other words they gave insiders early access) and often are marketing pump and dumps designed specifically to trap investors. The only consideration should be short term liquidity needs (say over 1-3 years) which could be impacted by Bitcoin volatility. As you learn more about Bitcoin you become more comfortable investing more personal and family wealth in it.