Some of the advice on here is crap, so don't listen to it.
My wife only got a Master's in accounting and she is eligible to sit for the CPA; in fact, she is preparing for it right now. There's also a strong demand for attorneys who have accounting backgrounds. She works for one of the Big Four accounting firms, and she has often told me that the attorneys there don't advance as quickly because they don't understand rudimentary accounting issues. At the same time, attorneys have many skills that the average accountant doesn't have, so if you combine the two, I think you'll definitely have the potential to be in high demand; and after working a few years, you'll have a lot of opportunities for advancement.