What does “really good” and “pretty high” mean when the RD admit rate is about 3%? If an applicant is twice as strong as her fellow applicants, then her statistical chances rise to 6%. Meh.
It’s a tough road to pursue. Apply with an open mind. Expect rejection, celebrate widely and joyously if accepted. See it as only a “hail mary” application and focus your energies, heart and mind on your match schools. Good luck