I agree wholeheartedly with this advice and also hope for kind of a dip in the stock market. Starting to invest a “large” amount of money seems pretty risky at the moment.
I also noticed a small mistake in your calculations. Or rather a typo. Maybe you can fix it for the other readers. In one of the first paragraphs is says:
“If you had invested $10,000 in an S&P 500 Index fund in May 2018 and reinvested the dividends, by January 2018 that $10,000 would have grown to $23,325. That equates to an annualized return of 16.1%. Talk about putting your money to work!”