Sorry for the slow reply, was out of town last week.
I would do about a 1/2 a teaspoon per cup of food with the olive oil. I use extra virgin just cuz it's processed less.
Blue reads pretty good but...... I don't like that fresh chicken is listed first, if in fact they use fresh it knockes the meat based protein way down. They also have an awful lot of starch, oatmeal is pretty much pure gluten, I would prefer to see whole oats instead. Salt, regardless of kind, shouldn't be added because of the the salt thats part of the vit/min. supplementation. It just isn't necessary. The big one to me though is the sunflower oil. It has been linked to itching and serious skin irritation. For some reason dogs just can't tolerate it. With Rods skin problems I wouldn't be feeding that.
Timberwolf at this point is the only dry food I would feed. It's not the easiest to find and that's a shame. It's becoming more available but it's slow going. The dogs love it, all the formulas. Garion has eaten all of them, since he comes to work with me he snacks on the kibble that misses the bag when we bulk it out. He's not a picky eater by any stretch but........ I can tell when he gets Wellness or Nature's Variety......wheeew, silent gas is deadly.
Sasha is also not finicky, and she's done superbly on this diet. Black Forest is the best formula for her since she's older, doesn't need the high protein, and definitely doesn't need the fat. She looks beautiful, and is very happy. She actually drools for food in the morning, that wasn't the case with the Wysong. For me the proof is in the pudding. And it's not just my dogs, I see dozens of dogs the looked "good" prior to feeding this food. They were on high quality foods, they all have detoxed, they all look much better. Dogs that won't eat get excited about meals, and stay happy with their food. They will rotate through the formulas, the dogs may decide to not eat one, maybe two but there are enough left that they don't get bored. It's the best dry food that has ever been made.