Quinoa - you can buy this in bulk where other bulk grains are sold, or sometimes as pasta. Quinoa is a complete protein, has many essential things in it, tastes similar to rice or polenta.
Raw fruits and veggies - the healthiest things you could ever eat! I believe these foods are our best option, and that a lack of them contributes to the majority of diseases and illnesses, mental and physical, that we suffer. Uncooked vegetables, fruits and sprouted nuts and seeds, contain a full spectrum of vitamins, mineral, enzymes, and antioxidants in their natural ratios.
Regarding the ranch dressing; thats a tough one to find w/out MSG, and without alot of fat, and still tasting good.
I used to make my own but it was far from lowfat. I used sour cream, mayo, garlic, onion, a dash of lemon, a dash of mustard, fresh parsley, and buttermilk (sometimes a little sugar too

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You could always try to make a "ranch" dressing using healthier fats; experiment with avacado, sesame tahini, extra virgin olive oil, and the best quality dairy you can find (farm fresh unpasteurized milk, goat milk or feta cheese, etc.)
It takes alot of reprogramming to really eat healthy, and people around you will often be a constant source of temptation and regression.
Ive settled with doing my best and eating as healthy as possible with the budget I have.
A good full spectrum nutrient/probiotic/enzyme/veggie powder I use helps supplement the less healthy times. If you want the name of that PM me, or someone let me know if its ok to list it here??