I can't comment much on your specific situation, but this sounds a bit familiar...
I did Applied Math, and my scores were pretty comparable to yours. I only applied to three Applied Stat schools and got into all of them. Two offered me financial support via grants and assistantships. I don't remember if the other did. Admission criteria may have changed since the economy is in the toilet.
I would imagine that having the M.S. already and reapplying to continue on for a Ph.D. would be a strong indication that you'd be in it for the long haul. In graduate school, there seems to be a big wave of attrition in the first year of the core courses, and then another after the M.S. is earned.
My undergrad GPA didn't seem to be a factor. The M.S. showed that I was capable of handling grad school coursework.
No idea about econ programs.
I'd be curious to see what the results were of your applications since my background was pretty comparable at the time.