How much do you put in ETFs, how much do you put in safe companies and how much do you put in risky companies?

Let's say, for example, that you have a total liquidity (in cash) of $60,000 after putting a full years worth of salary in a savings account and want to be a bit more risky.

How much of this do you:

A. Keep in cash.

B. Put into index ETFs (VOO, SPY)

C. Put into more risky ETFs

D. Put into safe companies (MSFT, APPL, AMZN, GOOGL)

E. Put into riskier companies.

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Another question: How much of your portfolio do you usually keep as one stock?

EDIT: I'm not worried about retirement at all, only worried about the next 10-20 years, so 401K, all of that stuff is irrelevant.