Congrats on the awesome score!
I wouldn't worry too much about the IR5. The only school which has a requirement for
IR scores is INSEAD, which requires you to have a IR 6 score. For the rest of the schools,
the IR score should not be a problem.
Also, from what I have heard a lot of times in the forum, that the GMAT score is just part
of the application package. The rest of the the application is just as important.So, without
wasting any more time, work on putting a strong application to the schools and all the best
for the application phase!