No, I wouldn’t recommend you apply for a PGPX course at IIM A B or C if you have completed a part-time MBA from IIM Lucknow. The reason is the huge overlap of electives in almost all the programs offered at IIMs. Leaving a few courses most of which are repeated in all the programs be it part-time or full-time.

Towards the end of the course, you might end up spending a hefty fee and lots of time and yet not learning anything new. If anything you might just get placed at a better firm. But that too will be useless if you are unable to harness the acquired knowledge and skills in the open market. The question is if your job will be worth your year lost, your lost opportunities, and 25-30 lakhs of loan.

Still, if you want to pursue the course go for a top MBA course abroad. That might make a difference in your resume and job prospects.