I have never been a rail thin girl. I have always been meaty, not fat just meaty. I know that 125 would be a very unreasonable weight for me to maintain, I also don't know how well I would look. For know I would really like to lose about 8 lbs. I'll see how I feel then.
There is no way to determine ones BMI unless is is professionally done. The best tests are the ones that they submerge you in a tub of water. I'm pretty sure those are hard to come by.

Good for you to determine what is best for you. It makes me feel better about my decision to go by how I feel, not by my clothes size and the scale.

Wee