I had an interdisciplinary degree in college - Bachelor of General Studies - with specializations in accounting, finance and marketing. If I could go back, I would select the following specializations: accounting, computer science and management information systems. Accounting and MIS go very well together. In fact, many businesses recruit information systems professionals with an accounting background. The computer science courses would have given me a strong background in computer programming and web development. I could do more online freelancing with a computer science and MIS background.
My specializations - accounting, finance, and marketing - do compliment each other. However, I would be in a stronger position to provide more valuable services to clients with computer science and MIS background.