I started like you and now I have like all my portfolio divided between 15-20 cryptos... :-/ But at least 5 of them concentrate more than 50% of my total value (Dash, Ethereum, Monero, Zcoin and Bitcoin). The rest is divided between "why not" and "surely can't do no wrong" cryptos. I have big hope for Factom, Rise, NEM and Ripple though, who have a lot of good press.