I would agree w/ Maxxx, we are making this a little too complicated.
That being said, I tend to use an amount of carbs that is proportionate to the bodypart trained. If I train a large group such as back or quads, I easily take in that many carbs. If I hit only delts, tri's, or something smaller I decrease the carbs to a more suitable amount. Post-workout protein never varies.
If you're training like you're supposed to, your body will have no problem digesting, utilizing, and growing on that many grams of sugar. In addition to the glutamine and Vitamin C, I also take in 400 IU Vitamin E and 300mg ALA.