Your stats and experience are exceptional! Aim for 90+ minimum on your PT test. The interview is the biggest piece of the pie, so research job interview tutorials and plan some responses detailing your leadership experiences. Technical (aka highly-desired majors) have an edge in the selection process and AFAIK general studies does not count as one - not to pressure you into picking a technical major, it’s just a heads-up.
They’ve recently made HSSP scholarships more difficult to get than in-college ones, so use that as a fuel to drive you on your push-ups & sit-ups, run, and especially interview prep. You’re on the right track.