Yes, specially for you, since you already have accounting experience, MIS is a excellent choice!
CS focus on computer technology;
MIS more focus on how to use Computer or Information system as a tool for business. So MIS focus more on business side.
MIS will teach many concept of ERP.
With MIS degree, you can easily target Business Analyst or Database Analyst jobs.
However, you better also learn some programming skills, it will help you.
You made a great decision to take MIS. How nice!