Usually good MNCs doesnt accept fresh grad for FP&A and would prefer candidates with prior work experience.

Even they take you in, progression would usually be slower.
3 years+ in Audit give you more exposure and you can expect more higher salary when u job hop over to a MNCs compared to internal progression.

Nevertheless, working in Big 4 as a junior is a not easy road, prepared to sacifice your personal life and burn your weekends.

Anyway, when you are young, work hard...u will reap the fruit of labor later