The wonderful rule of thumb these days to cut weight is try and consume a gram of protein PER pound of body weight. Idea being you need food, you need calories but if you eat more chicken, steak, seafood ect then you will eat less of things that are not healthy and still get in the vital protein needed to fuel your body.
Watch your 1500 calorie intake. The best thing to do is forget all the calculations and such online and just start eating healtheir and adjust as you go. When I dropped about 30 lbs last year I just made up a diet, calculated the amount of carbs, calories and protein and adjusted as need be to loose weight. Just remember, protein is big, get veggies in (fiber) and you need carbs but you need to watch the amount so rice, potatoes, bread, pasta, ect.