I am in the same boat - when I first started I chose a goal weight that was just a little higher than a weight I maintained for several years before having kids again (I thought I was being smart by taking into account my age and having had 2 kids!). well that goal weight was 5 pounds ago.
I am also a medium framed, busty girl who has always had hips and big thighs, even at my most fit.
I adjusted down 10lbs when I realized my body was still losing at a good rate and I wasn't struggling at all. Now I'm within sight of that 2nd goal, and I'm actually tossing around dropping my goal weight down another 5lbs. I am just paying attention to how I feel physically and emotionally about still being on phase 1. I want to be able to maintain comfortably without having to go crazy with insane amounts of exercise or continued superstrict dieting - just healthy eating and moderate exercise. Yeah, I want to be thin, but I would much rather be happy