I wouldn't hold anything online (keep it in a wallet you control) and know that almost nothing is regulated and even the "credible" sites (exchanges/investment sites) often end badly.  

I also invest in stocks, have a rental property, have some gold, and Lending Club.  Spread your money around, and don't invest more in Cryptos than you are willing to lose.  If my crypto holdings continue to grow as quickly as they have been, I'll take some off and put it in something safer, to keep accounts proportional.