If you are feeling hungry, then you probably need more calories. 1200 is pretty much the minimum amount of calories you'd ever want to consume. ANY lower than that, and your body starts to go into starvation mode. You don't want that! If that happens, instead of burning excess calories (or fat stores), your body holds on to every calorie you eat, and your metabolism slows waaay down, which means you burn even LESS calories... its a viscious cycle, and not one I'd like to flirt with.
The girls before me said it right, its trial and error. I would recommend eating all those healthy foods you listed until you are full. If you start feeling hungry again, than have a healthy snack! Nothing wrong with that. Just as long as its not empty calorie crackers or sweets or chips... you wanna much on veggies!! They fill you up but hardly have any calories!
When it comes down to it, weight loss is really simple math. Burn more calories than you eat, and you lose weight. Everyone's bodies are different though... You can do a BMR calculation to figure out how many cals YOU need every day just for your body to function. Then you can figure out how many cals YOU should eat to lose either 1 or 2 pounds a week based on how many cals YOU burn in daily activities plus exercise. Since a pound of fat is equivalent to about 3500 calories, you would need an average deficit of 500 cals a day to lose 1 lb a week, or 1000 cals a day to lose 2 lbs a week.
I like
www.caloriesperhour.com. It's a fairly complex website, but it is PACKED with info. If you take the time to figure out what your body needs, that's a good place to start. Keep at it for awhile, and you will see a difference!!