BCA

No, MS-CIT is just a computer course. MCA does not require any such course for admission.

You are eligible to seek admission in MBA. Although, regular MBA is best for your career, you can do MBA through distance learning while on job. You may choose any MBA regular or MBA distance learning based on your personal conditions or constraints.

'O' level course of DOEACC Scheme is equivalent to a Foundation Level Course in Computer Applications. Students can acquire this qualification by undergoing this course and passing the examination conducted by the NIELIT. After completion of 'O' Level course, students can further enroll for DOEACC 'A' level course. BCA is a graduation degree. 'O' level course is far below BCA. Even 'A' level course is not equivalent to BCA.

These are some best colleges for BCA:
Birla College Of Arts and Commerce
Amity Global Business School
University of Mumbai
Saraswati College of Engineering

It depends on your knowledge and the experience in job related to your field.
The companies in abroad demands the hands on experience.

I am from journalism background, but I think BCA will be a better option.