When I read peoples' posts, I usually look at their height and goal weight. I've noticed that our goals are very varied even when our heights are not and it has just made me wonder....where did you get the number you picked from?
Personally, I picked 150 because it was a nice round number. The last 'ideal' weight I was at was 140 but that was 17 years and 3 kids ago so I thought it would be unrealistic of me to aim for that again. I may reasses that.