Full Time MCA

MCA eligibility:
Any graduate who has passed or appearing for the final year degree examination in any discipline (science, commerce, arts, engineering or any approved university) is eligible to apply.
Candidates must have mathematics as a subject in their 10+2 course or any one year of graduation. BC

I think instead for going for a course, you should join a company and start working as only then you will be able to gain sound practical knowledge, pursuing a course after MCA won't help you much.

Hi,
You may but why you want to do? After MCA, there is enough scope in IT. Also, pursuing two courses is not an easy job and it will end up with a unsatisfactory result.

The value of distance MCA is less as compared to regular MCA. But, as you are already working, then distance MCA and your job experience will pay off well.

I always follow one rule if the job is paying well and you are having fun doing it continue with the job and enroll in any part-time institute to do any course so you keep upgrading. If the job is not making you happy then work on changing the job but never leave it. But keep doing part time courses

You need to qualify the entrance test in order to pursue MCA.

Hi,
Some of the universities might have entrances, so you may check the eligibility here:
https://it.shiksha.com/mca-distance-education-in-india-categorypage-10-97-1-0-0-1-1-2-none-1-0

The percentage doesn't matter when it comes to a job. If you have the rights skill set, you will get a job anywhere you wish to.