Hell no....don't cut it out.....I'd go with some whey isolate. The difference between isolate and concentrate is that concentrate is about 70% protein and the rest is sugars, fats, and flavorings. Isolate is about 90% protein and the rest is sugars, fats, and flavorings. Granted concentrate tastes better, but at that point in your dieting you shouldn't be worrying about taste. I would, however, only take the protein when I wake up and before I go to sleep. It doesn't really matter what type of isolate you choose (ion-exchanged, cold-filtered, etc....) just as long as it's isolate. You could take concentrate but I wouldn't in your case.