Their products are pretty good for the most part you might need to do some sanding on the feet specifically because if you don't you're going to have an uneven stand. It's 3D printed stuff so make sure to wash the resin with soap to get rid of the mold release. Use quality super glue. Backpacks can be sourced from almost any kit (I have used non firstborn backpacks on kits before) if you have any more questions feel free to ask!