A 169 seems exactly where you should be. Apply this time through, and if you don't get where you want (HYS aside, since they still may not let you in even over 170, totally hit-and-miss), then take it over. But with a 169, you're fine. If you'd been regularly scoring like 175-178, I'd say maybe it could be worth it, but with the range of 171-175, there's no guarantee you'd do any better, and if you take it again and only score 1 or 2 points higher, you look like a greedy feminine hygiene product. Take a good score when you see it, man.