Body Fat % + My Goal Weight

So, after reading one of Diary of anAspiring Loser’s blogs where she calculated her lean body mass based on her current weight and body fat %, I decided to do the same.  Currently, my lean body mass is 138 lbs.  Nice.  Of course, that right there tells you that I literally cannot get below my goal weight of 160.  In fact, I may not even be able to get to my goal weight.  See, I did the math and if I stay at my current lean body mass of 138, at 160 I will have only 14% body fat.  While not impossible, it would be extremely difficult to maintain that percentage.  I wouldn’t be able to miss a single day of working out, I would have to be super dooper hypervigilant about my eating and calorie intake.  It would be a full time job to maintain that percentage.  So, I’ve done a little more math and have discovered that at 166, I would have 17% body fat.  A much, much, MUCH more maintainable percentage.  So, I guess my new goal weight would be 166, giving me only 10 lbs to go until I reach my goal weight.  At that point, while I will continue to log my miles in running, I will focus a little more on pushing myself in my strength training.  I want to be one of those girls with well-defined muscles.  But I also want to be a girl who is known for her running.