Advice on Interview Prep?

I am a rising senior at a target but in a very non-traditional major. Currently an intern in a corporate finance type role at a top BB bank, but want to do consulting, and have an interview at my top choice MBB in less than a month.

I seriously want this job and have been networking heavily all summer. Now that I have the interview, does anyone have any recommendations for how or what to practice?

I have been casing for months, admittedly at a rather relaxed rate (5-6 times a week). I plan to increase that going forward and am scheduling practice sessions with current consultants from other firms and ex-consultants from the firm where I am interviewing. But what can I do to really kick it up a notch?

I know this is kind of a strange question, but when my interview rolls around I want to know with absolute certainty that I have done everything to be as good as I possibly can be. 

Thanks!