Admitted and paid the deposit already - Should I give my GMAT again?

I've gained admission into one of my target schools(HEC Paris) and have paid the deposit already. I was dinged at my dream school (IMD), but I do not think it was solely because of my GMAT score (690). I did plan to retake my GMAT, but after the ding from IMD I didn't want to waste effort on that while I could in fact concentrate on other parts of my applications to other schools.

So, now here is my dilemma. I understand that the GMAT is not only required for your admission into a school, but is also used in the post-MBA scenario by companies who recruit at the campus. Now, I've heard that this is particularly true for Consulting/IB/PE, but I have not heard that industry giants don't do so.

I was thinking maybe I should retake my GMAT with a proper prep (I attempted my first time with only 40 days of prep) and aim for a 700+ score if I need to put it on my resume with confidence.

OTOH, as an older candidate with a spouse and a kid, I don't intend to go into consulting/IB/PE either given the work-life balance situation in these jobs. My target has always been a general management career in the industry.

Will my sub-700 GMAT impede job prospects in the industry too (or to be more specific will a 700+ GMAT actually be a resume builder when it comes to industry jobs)? Or is it only a criteria for the Consulting/IB/PE jobs?