Yup, seeing how you got a working mesh already in Iclone, I'd really just use that to do your posing/animation. If you wanted to use iray, could always import an already posed mesh for static renders.
Try to translate the fbx motion to bvh in 3dxchange or MotionBuilder.
But only the basic bones. the foot, arms and Hand fingers(if have motion..), the legs, hips, spine(s), neck(s) and head. NO eyes, ears, etc...