indeed, great suggestions Christian, thanks!, seems like artizan would be a must see for this project.
In fact i was considering this set from copplestone

From left to right, first one would be Annibal (the old guy), second one "the face", the tech (murdock?), and MrT, properly afro painted of course.
The shame is the pic size, so tiny it's hard to say if the first guy cigar looks like an havano cigar, and the haircut of MrT could look like a "old style mohawk" as the pic suggest. Anyway those details can be easily fixed.
Gonna do a deep browse of the artizan site and look for the catachan sprue.