Sorry, I have cut your post but just to remind me of what you said. I think a lot of this is down to genetics. When I look at some of my flabby bits, they are much flabbier than some people that I know who are much heavier than I am/was. I think I knew that even before I started to lose weight. If you don't have much of an overhang now, hopefully things will settle down. Exercise will definitely help.
12 stone is a great target - at least to start with. I'm not much taller than you and just over 12 stone. I feel great. Although I'd like to lose more it would be ok with me if I didn't lose any more. In fact when I was talking to someone today who asked me if I'd been on a diet - he said I looked great and when I said that I'd like to lose a bit more but it didn't matter if I don't, he said no don't, really, you look great as you are. I think he really meant it which I find a bit scary ! So you will feel fab. When you get there you can decide if you want to lose any more.
Glad you've had a good week. Hope it continues
Gail x