Should I do a PGDL/MA Law Conversion course or my LLB?

To anyone enrolled at the University of Law who is not from the UK, but perhaps from the Caribbean (or any other region). Would you recommend taking the PGDL or MA law conversion, or just doing the LLB? For background, I’m completing my four-year undergraduate degree from a school in the US this month, but im originally from a country in the caribbean. I eventually want to work in international law at the UN or at another international/regional organisation.