I think it depends on what your definition of "ideal" weight is. If it is fitting into size 4 or having certain measurements, its going to be one thing. If it is certain
fat %, then it is another (yes, you'd have to buy calipers, but I don't think they are that expensive!). If you just want to be healthy, then there is a rather large weight range at which your
body can function at the optimum level and be at low risk of weight-related problems.
So, I think its a personal thing. For me, I don't know if I'd ever be able to get to size 4 and feel like I'm not starving or overstressing my system, so I am loosing weight in steps. My first step is to get to 125, and then measure my
fat% and inches, and based on that re-evaluate whether I could loose more or whether I should maintain that number. It will depend a lot on how I feel
energy-wise. My main
goal is to maximize health,
energy,
fitness and strength, and whatever number on the scale that is I don't really know, but I hope that I would be able to feel it when I get there.