CS is a great course for the Corporate Sector and I would rate it way higher than an MBA (MBA graduates are dime a dozen nowadays and there is a glut in the market). Your Legal background will stand you in good stead to tackle the legal aspects of Corporate Compliance. Employment opportunities and pay packets for a Good CS can compare well with IIM graduates. On the flip side its a rigorous course, lots to study, lots of law involved, and quite tough actually. but once through the refining fire of the Executive and Professional Courses of the ICSI, you will be a more confident and capable person than your peers doing MBA.
Best of Luck!