50% BTC
40% top 15 Altcoin
10% meaningful ICO
That's my portfolio, originally also 20K.

i am more on advantageous mode,
30% on top 20 coins including btc
40% altcoins
30% ICO, this portion grown too fast.. sometime almost take half of my portfolio. Thanks to sudden waves of chinese icos and exchanges.
i am slowly switching to more conservative portfolio, hopefully keeping more btc..