Jessica - I'm 5' 8.75'' and currently at 151. I'm aiming for 145 because I still have some pudge but mainly I want to tone up and change the shape of my body. I have a small chest so I don't carry much weight there - if you are naturally better endowed than I am, you will be able to stop at a higher weight because you will have lost more from other areas

I look far better at this weight (obviously) than I did even ten pounds ago. I put on 7lbs over six months last year and finally got back to where I was before but I really FELT the 7lbs. I think as you get even closer to goal you will know when to stop. My body is happy at 150 but I'm not happy and I struggle to get below this point because it just does not want to let go! A combination of being where you want to be, where you can maintain, and where your body wants to be should give you a good indication of when it's time to stop
Good luck! You've come SO far already you can totally reach whatever goal you set for yourself
JJ Canada, stop tempting me with Tim's! I miss it SOOOO much. I'm from Calgary (Vancouver originally though). Double doubles are evil and a major calorie hit considering it's just a drink and I don't like drinking my calories, but between that and iced caps I am in serious trouble when I go anywhere near a Tim's! And the breakfast sandwich - MMMM. Perhaps I should be glad there are none over here

My friend sent me a t-shirt in my first year abroad that says 'Give me my Timmy's and nobody gets hurt'. LOL No one knows what it refers to but I wear it anyway!