I would aim lower in general when it comes to schools & I'd focus primarily on part-time programs given your age & years of experience, which are both quite a bit above the average for full time programs. Full time programs generally want applicants with 3-5 years of experience upon matriculation & when you have more than that it generally weakens your candidacy. You are right in the sweet spot for part time programs though, and they are easier to get into than their full time counterparts.
A 700 is not a strong GMAT for a top 10 school (the average for top 10 is typically 720+), especially since you don't come from a prestigious undergrad & since, due to the nature of the job, it's tough to show business impact or leadership when you're an auditor. I'm not sure to what extent you've been able to demonstrate leadership in your current role or drive tangible impact (i.e., impact that affects the bottom line). Your extracurriculars are also a bit weak - tutoring is better than nothing but ideally they want to see extracurriculars where you've driven quantifiable impact on an organization & demonstrated leadership experience.
It will also be critical to refine your post-MBA goals. Consulting is an extremely common post-MBA goal, so that's not a differentiator. It means you'll be lumped in & compared against all the other candidates who have that as their goal as well. Strategy in a fortune 500 company could work but you'll need to be MUCH more specific. The adcom will want to know what your 2-3 target companies are & why, what big trends you think will impact those companies in the next 10-12 years & what that will translate to in terms of problems & opportunities, what your unique vision is for tackling those problems and opportunities, and WHY this is your passion. Post-MBA goals are not only a chance to differentiate yourself but are also the basis for your why MBA/why our school argument & you need to show a clear, concise vision.
Given all of that, I think you'd need a 740 to really have any shot at HBS & Wharton -- and even if you do land a 740 you'll still need some really strong essays & will need to convey a unique value prop. Part time programs are easier to get into, so if you can nail a 700 I think you have a shot at the part-time programs at Booth & Kellogg although they will still be a bit of a reach (and our of reach with a 650). I'd consider including the PT program at Haas, UCLA & Columbia to your list as well.
You do have a shot at McCombs, but again only if you can at least hit 700. The average GMAT there is 700. I'd broaden your list to include schools like Tepper, UNC & Emory & I'd stick to schools in the 11-20 range (for full time that is) even with a 700. If your score is below 700 I'd aim lower & target schools where 650 (or wherever you ultimately land) is the average.
If you need any help thinking through your strategy & your story definitely reach out to us. If you email Claudia at
claudia@admissionado.com she can set you up with a free consultation with one of our MBA consultants who can take a look at your resume & give you some more detailed thoughts!