Many schools average all attempts, especially for screening. Obviously the jump up for your last attempts will be viewed positively. Did you get any interviews? I'm assuming your 519 happened very recently? Upward GPA trends that matter begin with a GPA lower than 3.0, and I'm not sure you have had that bad of a starting point, if you have been an undergrad for 3 years finishing with the GPAs you report. I agree your reaches are unreasonable without knowing your mission fit... and that might be a real stretch.
I'm a little worried about your hours. Clinical hours still seem light when I consider your anticipated hours (that you will have completed when you apply). Your high school research doesn't matter unless you really want that paper to count when you apply for residency, and even so, that's a pretty old research unit of productivity that may have nothing to do with the specialty you want to pursue (since we don't know what you did). Rush wants more hours than you listed, since you also included teaching and leadership in your 700-hour total; it also waters down a sense of your service orientation, and I'm not sure where you show longevity in your community involvement.
You must include DO schools. Many schools can penalize applicants who are 3x applicants, and those where you are a reapplicant may penalize your application if you didn't show significant improvement in your application (including the major essays).