After looking through the original files and the other remixes, I just wanted something that I could print all the files of without having to re-orientate or do any work. I decided to do it myself, as I had my own preference on how they should be orientated and I wanted to do that with the original files. All the files have been separated out, and have been oriented so the first layer is as level as possible. Almost all of these need supports touching build plate, so I'd recommend just leaving that setting on since the ones that don't need it aren't going to be affected negatively anyway. The side pieces barely even touch the build plate, but my reason for orienting it the way it is was to make the circle portion as flat as possible. Obviously you will need supports for those parts.
Another thing I wanted was to make sure I got the right motorized visor, so here's that: https://www.thingiverse.com/thing:2030176
I haven't finished printing everything yet so consider it a "WIP", but will upload pics once it's all together.
UPDATE 1/27/19: I re-uploaded the earpiece after leveling it out better. Didn't realize the original one wasn't already flat on top.
I'd personally recommend using some additional walls for added strength. Using 3 or 4 should be fine. For less sanding, you may want to print the side pieces with .1mm layer height. Like I said in the description, use supports touching build plate on all parts. User "TheJackal" also recommends .256 support z distance for easy support removal.