I'm 5'8" and as a teen looked terrific at 135 but, to make my weight point again, anytime I get even close to 170 lbs my doctors remark how I'm too skinny...

I'm a size 14. I feel and look best at size 9. (I'm female btw) Ryan, do you have clothes still that you recall feeling great in? If you do, then I would shoot for that size... if it's recent and realistic, ya know?