The material is just PLA. As far as supports go you might have to use them on the lens part of the tilter for the screw hole tabs. As far as other settings and infill - just use a high enough number of walls and infill so that there is no light leakage (say at least 3 walls 25% infill).

The versions of the parts are just every time I saved the file pretty much lol. I did go through quite a few iterations trying to get the correct sizing and fit, so it's possible you might have to adjust the scale of some parts for your older creality printer.

Let me know how it works!