How good is being FAANG contractor for your career?

I have 4 yo of experience as SWE and worked for some big corpos, but not FAANG level.

Now I have opportunity through some vendor company to work as FAANG contractor.

Would it be a big break for my career? Is it worth taking, if the potential pay is at 60-70 percent of what's possible for me?

I am kind off hyped for the opportunity, as working in FAANG was always my dream, obviously, but I am not sure how truly special it is.