I just want to say that I clicked on your thread because I mis-read the last part as
"plebe meth questions" and was exceedingly glad that you weren't asking about prior use of methamphetamines.
1. Your test scores are in the upper echelon of the USMA average for candidates.
2. Three (3) grades of "C" this semester is certainly not good, but does not a cumulative GPA make. From a Service Academy point of view, making the distinction that these classes are IB or AP level won't amount to anything, because they
expect you to take these types of classes to be competitive as a candidate.
3. Plebes are expected (required) to be in certain sports during the Summer and can usually pick what they want to do during the academic year, outside of a Varsity team (if they aren't on one - or not quite that caliber - which covers a lot of that incoming class). The Summer may be a chance to try something out (like Boxing) that may interest them enough to stick with, during the academic year. As for a special teams, there are usually screeners ("tryouts") for inclusion on those teams. Many special teams may take only 1 or 2 Plebes every year, so
if it's something that a lot of Plebes want to try out for, you'll find yourself participating in one (or more) physical screeners, followed by a skills screener, and possibly an interview-type screener (to see if you would fit within the mindset of the special team). These things sometimes start out with seventy-five (75) hopefuls who are pared down to say, 25, then cut some more until there are a handful from which to choose. I would fully expect that the parachute team or combat weapons team (as examples) would be very similar to what I suggest, as far as difficulty-to-get-on. Not impossible, but not very probable.