Can you tell me if i ate around 700-1000 calories a day, thats without exercise.. (i'd probably do 200-300 worth of exercise) would this help me loose weight?

Yes but: This is rather excessive caloric restriction. It won't be sustainable in the long run. If you want to utilize this in the short run to augment your initial weight loss, that's not too unreasonable, but after that you'll need to consider a caloric range that's more sustainable in the long run(of your weight loss period), like in the 1500-1800 kcal/day range.