You actually don't need all that geometry. Once you get it to a level of detail that you like, you can run it through a poly-reducer, and get a much more efficient mesh, without sacrificing details. For example, if you open your high poly object in Meshlab (free software), and follow this tutorial: https://www.shapeways.com/tutorials/p...n_with_meshlab you'll get a much more efficient mesh out. It even works on UVs; weeeee!