Um, those sound like marketed foods from a glider mill.
Unfortunately the answer is no. A pellet diet will not be enough for your gliders, even with a multivitamin sprinkled on it. Gliders need protein, calcium and several other things. Most people feed a variety of fruits, veggies and protein each night. I myself use a diet my vet suggests which consists mostly of fresh bugs and a mix I can create. Fruits and vegetables as a treat.
Anyway, do some search on some real diets, not something that a salesman gives you. You can even try calling vets in your area and see what they suggest.