Too early to offer specific advice for your situation. As there are well over 500 fully accredited MBA programs in the US, selective admissions (below 50% accepted) is only a concern at about 50 or 60 fulltime 2 year MBA programs. Plus, you may opt for a one year specialty masters degree rather than an MBA.
Business schools are primarily concerned with an applicant’s post undergraduate work experience & an applicant’s reasons for wanting an MBA degree. Then GMAT score & recommendations & GPA. If you earn a CPA designation & license, then GPA becomes even less important.
Working for a Big 4 & earning a CPA license is not particularly attractive to the most elite MBA programs, although it certainly does not disqualify one.
It is common for recent accounting grads to get a masters in accounting or in taxation right after college or very, very early in one’s career.