Go back to what our IH guys always recommend - compare what you are used to wearing vs what these measurements are and start there.
If you don't know what fit is for you yet, then measurements help, but nothing compares to owning them and living in them for a bit. And if that makes you pause because of the investment, then perhaps go to the buying / selling section and look for a used pair so you can figure it out at a lower $$$ point?
But what Kasi said, was based his preference, based on his body and where he is used to wearing jeans on his waist. We can't tell you what's too low of a RR or what's to high.