Before interest rates come down, you may want to consider loading up on these terrific income stocks.Dividend stocks can be a great source of cash flow for your portfolio. You don't need to settle for stocks that pay just a few percentage points, either. Some fairly safe, high-yielding stocks pay far more than the S&P 500 average of 1.3%.Pfizer (PFE 0.42%), BCE (BCE 1.22%), and AT&T (T 1.13%) could all make for good income investments to add to your portfolio right now, as they all pay more than 5% and are ...