Liberia is very fast. I sent all the financial evidence and proof of relationship in Sept and sent a few more docs in Oct. Due to the poor mail system they allow applicants to pick up their packets 3 & 4, which saves time. They provide the interview date (usually no more than a week and a half later) the same day. Be prepared, Liberia moves quickly. My SO was with me less than a month after picking up his packets.