Note that Gettysburg’s Class of 2025 admit rate was 56%. (Higher than 2024’s) Detail - Gettysburg.edu
It would be good to know the time frame of the Naviance data….aren’t there bar charts at the top of the scattergram that show
applied/admitted/enrolled data by year?
What the scattergram shows looks much higher than a 45% acceptance rate for your school, no? Based on this it looks like you are likely to be accepted.
I’m not sure what you are seeing in the class of 2024 CDS that suggests Gettysburg is a reach. Math SAT is below 25%ile, EBRW at the 75%ile, so that’s a match. The class rank data is irrelevant, because your school doesn’t report it. No GPA data, but if there was, it would likely be worthless.
Have you demonstrated interest? Beyond that, all you can do now is wait until March. Congratulations on the acceptances you do have!