Hi naven,
760 is a great score, so congrats! Regarding IR, first off, I would reach out to some admissions consultants here on GMAT club to see what they have to say about your IR score.
Second, if you have to retake, the good news is that you have a 760 in your "back pocket", so even if you cannot replicate a 760 on the GMAT, you can still just apply with your old score and then use the optional essay to address your IR score.
Once you make a decision on how to move forward, please let us know.