Hi Charles1,
It's no problem.
Business Schools DO tend to have a 'minimum standard' when it comes to the AWA (usually any score from a 4.0 or higher is fine), but if you can score at a higher level with just a bit of 'tweaking', then it's worth it. Many Business Schools have publicly stated that they don't use an applicant's IR score as part of the application process, so you are correct that there is less of an incentive to do well on that section. To be fair, that section is mostly about CR skills with a bit of Quant (and Quant Tactics) thrown in - so if you can score well in Quant and CR, then you can probably score reasonably well at IR.
GMAT assassins aren't born, they're made,
Rich