LOSING WEIGHT AND GAINING BACK

Hi guys. I used to be 145-150 last year and I gaiend everything back. I am disappointed but now I'm catching up again and more motivated than ever. I am 5'6 and now I am flactuating from 157-160. I need to be 110-130 by 2014. This is my diet/fitness plan 2014.

oatmeal
yogurt
soup
dark chocolate
fruits and vegetables
almonds
chicken
fish
prunes
grapefruit
Silk Almond Vanilla
v8
Lean Cuisine
100 % Whole Wheat
Sandiwich meats
salads
water
crystal light
Brewed Ice Tea
Coffee

I zumba everyday for 20-30 minutes at home and Saturday and Sunday for 1 hour on Zumba Class with other people and do crunches on my bedroom. I can't walk because I'm in Alaska and it's snowy and cold outside. I don't eat more than 2,000 calorie a day and avoid fats, fry, junk food and fast food. Do you think I can do it? What else should I add to my diet?And what should I do so I won't gain back the weight I had just lose?
E