@grafsmgms …you pose some pretty good questions. I may not know the exact answers, but here are my experiences…
I applied to CAS, but I checked off the box to be considered for CGS as well (if you haven’t looked at the actual app, that’s basically all it is, a little checkbox, at least when I applied). I really don’t think it makes you seem expendable, if anything I feel like it shows you are really committed to BU, enough to accept your second choice of school even. I think a lot, maybe even a majority, of people opt for the CGS back-up, so it won’t look bad.
As for grade deflation…still a tough call. I will say it can be pretty tricky to get good grades in gen eds (mostly 100 levels) as these are larger lecture sections that are often graded on a bell curve. Higher levels typically don’t have this problem. Not every class though, but definitely a lot of the premed/other stem classes (if you are even in that). I have only been here a year, but I still managed a 3.64 with all these gen eds (More specifically, I got B/B+ my first semester, partially I think because college was a huge adjustment for me and I didn’t really get the hang of it until December lol). My second semester was a mix of 100 level and 200/300 levels; I got three A’s and two A-'s. This summer I took two classes, One A-, one B+ (in CH 172-Principles of Organic and Biochem. As a side note, if for some reason you need this class, don’t take it with Huang. God it was awful). So it really isn’t impossible to get decent grades, you will have to work a little harder, but I never had to pull an all nighter or anything and I’m happy with how things turned out. It will likely vary by major though. I was bio (not premed), will now be going to earth and environmental science. Grad schools typically only look for 3.0-3.5 anyway, so you don’t need a 4.0. Experiences are far more important than grads to grad school anyway, and BU has so many research experiences for undergrads of all years (research is not just for STEM btw!). I got an internship in a lab about a month into school, and it’s great.
Also, there’s the ERC (educational resource center) which has tutoring services for a lot of intro courses. If you end up here, I highly recommend taking advantage of it if you find yourself struggling/not doing as well as you might hope.
For the BU question, I highly suggest you do not make the mistake of accidentally answering “Why Boston?” instead of the real question, "Why BU?’. That is definitely a downfall of a lot of people. They don’t care why you might like Boston, they want to know why you like the school. Also, you have a very limited amount of words to do it in, so keep it genuine, and get your point across while skipping the corny BS. For example, I specifically talked about the Marine Semester and how I thought it was a great opportunity for my interests, unparalleled anywhere else (and something else, but I honestly can’t remember). Just pick one or two things, as specific as a program or something as broad as the great study abroad opportunities, and say why you feel you couldn’t get that experience anywhere else/why BU is the best for it.
Good luck!