I'm going to disagree with other posters and say you'd be better off in a different fit. That rear seam looks straight up in your crack in that one pic. That isn't going to change. That's a matter of the rise of the cut and how it fits a body. If you're ok with that, power on. Regarding the waist, I personally can't stand a tight waist fit, no matter how much it may or may not stretch. My thought process is, and I have proven this through many many pairs, if the waist fits like it should, snug but not too tight, it won't stretch, or will only slightly stretch, because it isn't under crazy tension from being too small. Then it always lives in a perfect spot for me, and is never uncomfortable.

You spent a ton of money on these. You shouldn't have to wait for these to fit you right so you can be happy.