What is my Ideal Body Weight?

Well, I have almost lost my first 50 pounds. Lately I have been wondering to myself at what point and at what weight will I want to stop losing weight and just maintain? On my surgeon's chart its says I should weigh between 127 and 141 for my height of 5 foot 5. If I make it in that weight range I will be very thin, possibly on the verge of looking unhealthy. Like I have said, I haven't always been morbidly obese, so I know what I look like at various weights. Here is me in 2004 at 170 pounds:



Pretty hot right? Ha ha. I find it interesting that some girls are considered overweight at 170, but I look really good at 170. I'm naturally muscular, I get that from my dad, so that explains my arms in these pics. I was working out everyday, and genetically I have the advantage of building good muscle mass when I lift weight, which also explains that I look good here but the scale tipped to the overweight category for my height. The lowest I ever got was in high school and it was 148, but I always felt fat in high school because girls my height were usually around 120 pounds. On my papers at the surgeon's office I have my ideal body weight listed at 140 pounds which is in the high range for my height, but right now until I get there I think that is where I want to be. When I reach my goal weight I plan on doing triathlons and other athletic competitions and being that small might help my performance. This is really just all speculation right now, I really won't know how I feel until I get there.