Best advice here for this week is to diversify your portfolio.
Ethereum and Ethereum Cash- buy, buy and buy these, consolidate and put away in your wallet and forget about it. Ethereum and Ethereum Cash have got a long way to go and they still have a lot of legs. We can foresee as Ethereum gets more and more use cases (e.g. Smart Contracts, Proof of concepts)
Use Bitcoin cash as a HEDGE against Bitcoin
But make sure, please, please, please you’re doing this with the ultimate goal of building up more Bitcoin. It’s important to have a diversified portfolio but as soon as Bitcoin gets over the problems with.