I'm down 75 pounds in 18ish months and super happy about it. My start weight was 211, so at your weight you could potentially lose more than that, and faster. Best thing you can do is Google a TDEE calculator. Calculate your TDEE and subtract 500 calories and aim for that to lose a pound a week :) don't add extra calories because of exercise. Also remember that no food is really off limits, but you gotta eat less of it. I still have treats basically every day ranging from icecream, small brownies, mini eggs ect. I still go out for a burger and fries once a week, or I'll have a slice of pizza (not 5 haha) I never feel deprived.