First You answer these
1. Your ambition?
2. Country you want to go?
When you are applying for foreign education or any other required job they'll be calculating your qualifications. Doing CIMA or being passed finalist won't add you any marks. But after completing these you must take Membership (They have given you objectives & you have to achieve them in simple terms). Once you are having membership as far as I know you will get 15 Marks for Aus visa.
Middle east accept those who are from Big 4 Audit firms (KPMG, PWC, E&Y, Deloitte) experiences.
First decide why you really want to do this? For just going to Foreign do a Bsc obtain good GPA & Apply..
U can do MBA MSC after Completion of CIMA in Sri Lanka but applying Foreign will always look for membership
For CIMA Membership - ACMA (Associate) / FCMA (Fellow) & CGMA