you will need to make up your mind as to what career path you want to pursue before you get into a Masters program. if you don't want to work as a CPA, you should probably look into other things that might interest you. The job market is very good for accounting majors who are eligible to sit for the CPA exam.I don't know about all states, but in some states you can take all four parts of the CPA exam before fulfilling the work experience requirement- you get your license after you complete the work requirement. Usually if you have completed all four parts of the CPA exam most firms will try their best to hire you. Then after you finish your 1 year work requirement you can get your license.
The Big 4 usually hire international students and sponsor H1. The best way to get into Big 4 is through internships. Find an internship with them before you finish your program. More often than not internships with CPA firms lead to full time jobs....
I hope this helps