Hi guys!
Awesome project. I’m trying to push this a little within the Virtual Pinball community and have therefore set up a GitHub repo with the project files. You can find it here:
https://github.com/freezy/pinball-construction-kit
If you have any concerns, let me know. Also @Joe Conley, if you could let me know under which license you want this sailing, that would be great.
I have fiddled around with it a little and (the UE4 noob that I am) came across a first problem. Feel free to participate in the discussion. 
Cheers!