That is the nice part about the MCAT existing. That 521 has almost literally washed away your academic 'sins'.
The only thing I will note is to make sure you have a answer to "What happened in your freshman year?" just because interviewers will be curious. Almost any answer will satiate their interest, just don't get caught flat-footed (not that I would expect you to).
David D, MD - USMLE and MCAT Tutor
Med School Tutors