Should I retopo the mesh now as the next step to help get it in a good pose
Yep, that’s exactly right! Once you retopologize, you’ll be better able to rig it up and move him around.
Here’s a good intro to rigging if you haven’t tried it yet:
https://cgcookie.com/course/rig-and-animate-a-treasure-chest-in-blender-2-8
https://cgcookie.com/course/fundamentals-of-rigging
