How long realistically to lose 80 pounds?

You have nearly the same stats that I do. I'm probably going to hit 50lbs in a year. Which is all I was ever aiming for with a few breaks and a consistent 1lb per week or a little more earlier on. I'll have another 20-30 to get to the upper end of a healthy BMI and I think at the moment that will be where I'll stay as I'm quite small for my weight at the moment but I won't know until I'm there! I expect it to take me a good 6-8 months to lose the rest because I'm just not willing to cut calories further, I need my food.

For me I was more interested in compliance than speed. Even at the upper end 2lbs was just too aggressive a goal for me, I wouldn't have lasted the distance.

But honestly, if I were getting married tomorrow I'd be pretty happy with my appearance sans those 50lbs! If you're not already, get going with strength training, either body weight, moderate weight or lifting heavy, it will make a huge impact on your body composition and make you feel as if you're progressing a lot faster than what the scales tell you.

Check out a thread in Success Stories. It is called 'I lost 140 pounds in 6 months." The guy didn't use any gimicks - just calorie counted and excercise. Another great experience in that same section is Shane Lynch. He has lost 180 pounds since last June. I messaged him asking if he had surgery or used any pills and he said it was all through calorie counting, tracking evetything and daily walking.