What's a good path to a top B-School for me?

Hey guys, I'm a freshman undergraduate who aspires to attend a top B-School and eventually get hired at MBB or any top consulting or I-Banking firm for that matter. While I know I'm 500 steps ahead of myself right now, I want to know what I kind of need to do to be able to admitted to a top MBA program down the line (besides having a high GPA and gmat score)

Here's some info about me:
- White male
- Economics major at Northeastern University (USNWR top 40 non-target)
- Not first generation, nor do I have any inspiring story about overcoming adversity, etc.
- Have gotten involved in quite a few extracurricular activities since I've been here.

I'm just curious what I could possibly do to stand out and get myself into a top MBA program because I feel like I generally have the makings of a "silver" applicant to B-School: solid resume, but nothing top notch. I know that many have landed good middle market firms from NU, but MBB or a BB is essentially impossible for me out of undergrad (I also know absolutely no one in the industry, so networking is a bit of an uphill battle as well). I do think I could possibly be able to land a position at a firm like Accenture or LEK out of undergrad if I do well enough, but I'm not exactly sure how impressive that would really be to elite B-Schools.

Also please do not suggest that I transfer to a target or semi-target, the merit scholarship I have at NU is the only thing keeping me from graduating with mountains of debt which would've made me unable to even afford an MBA. I was actually admitted to two semi-targets when I applied to college last spring, but was given unworkable FA packages from both.