Well, keep in mind most college students don't really cook, so having an easily accesible kitchen area isn't a priority when laying out a building. But, that also means that it will be empty more often than not, save for people microwaving frozen dinners. If you're willing to walk a bit, I'd be surprised if you had trouble cooking your meals. The only thing that would worry me is the use of the word "kitchenette" because alot of times those don't have a stove/oven. But I think technically the -ette suffix is applied because the area is less than 100 square feet or something, not because of any lack of appliances. So it could still have a stove. For the record, no dorm I ever lived in lacked a space for somebody to cook something reasonably legitimate. And I was a resident advisor at a large university for a few years, so I saw alot of different types of dorms (we had newer, modern buildings, as well as dorms that went back to 1940's).
I wouldn't sweat the calculus performance too much either. You're already accepted, right? So worst case scenario is that they make you take it again in college. I remember struggling in high school calculus, taking it again in college and breezing through it. Going through that stuff twice is good, because its so essential for just about any other math you'll take. I guess if you're not taking anything beyond that class for your major, then there's no real advantage to having taken it twice, but at least you'll be a calc whiz.