Following the idea of blending human and monkey features I enlarged hands and feet but keeping the human anatomy.
Then I started the re-topology. High poly had 5,510,762 faces (triangles), low poly has 5,690 faces (quads).
And I unwrap my model for the UV, this is just the body. I plan to split my model in 4 materials, body and mouth/teeth/tongue, eyes, hair and finally clothing and accessories. I made the face much bigger because I want to make some close up renders of his face, and I want to have a higher resolution. By the other hand I laid up all my islands following the same direction to avoid issues later when texturing.