Quote - just to say, shrinkwrap does what it says.   i don't think that's what you want.  your shape isn't organic, and i think you'll have a problem getting crisp edges.  i think you'd want to try the retopo tool in Blender.   it does exactly what it sounds like - allows you to create a new mesh on top of the old one, so you have the same shape but different topography.  i haven't tried it, only read about it. 

it does seem like it's your internal geometry that's killing you.  and areas that could be one poly instead of several.  maybe booleans functions would merge those away? 

Installing blender right now.

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