Great printing job! If you have an enclosed printer with a vent (grow tent in acceptable), you can try printing in ABS, HIPS or ASA. You would then be able to smooth the prints with Acetone vapor and even glue the parts together with Acetone or Tamiya Extra thin (like any modern ABS or Styrene kit).
I use my FDM for prototyping and basic shapes - for some shapes, I find it a little faster than measuring, cutting and gluing styrene. I can work on something else while a part is printing. I occasionally use a print part as a skeleton for a styrene skin. PLA works OK, but ABS/ASA/HIPS works better.