I am also still considering getting Congo (but want to have some models painted for IHMN, first, and Wayland takes some time to get my latest order, containing some native Africans, together and delivered).
Well, I have a sweet deal on a second hand Warlord Rorke's Drift set waiting for me in a little over a weeks time, so maybe... (yes, I know, Zulus are not really the target of Congo, but I have a rather relaxed 'pulpy' approach to games set in the Dark Continent).