H*ll...I'm 5'1 and somewhere between 135-138. My lowest was 126 and I've been maintaining within 10lbs for nearly 4 years. I would rather weight 125lb, but I'm done counting every calorie and being miserable. My measurements are 34/27.5/37 and I wear size xsmall for tops, 4 or 6 for bottoms.
I lift, run, cycle, walk a ton, practice yoga and my bodyfat is at approx. 22%. ....who cares what the scale says. I'm sure many people would love to have my body even if it's "heavier". it's how you look and how you feel. At this "weight" I can also eat without being obsessed about the stupid scale.
Like the others have said too, you won't know for sure until you get closer to goal, and Melissa (berryblondeboys) has probably given you the best advice.
....it's a shame that we spend so much time focusing on the scale. we need to concentrate our energy on the quality of our diet and exercise. Eat a variety of whole foods (not food products) that are good for you in moderate amounts, get lots of fresh air and activity, and focus on a healthy lifestyle and everything else will fall into place and be manageable for years to come.
good luck and all the best