MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
White material is almost useless as diffusive material. Even with 2-3 thin layers at 0.1mm you'll end up with less light coming through than through 2 sheets of regular copy paper.
Yes, the 5V version of the pro mini is used. Be aware there's some clones out there using the ATmega168 instead of the ATmega328P. They only have 1kb SRAM (instead of 2kb) so you might need to remove some parts of the code (serial outputs) to make it "fit".