Hi ! 
This looks like a fantastic and intrigueing project. I am impressed and inspired by the game concept.
I am a fairly experienced and skilled 3D artist, and although I am working pretty much full time on a Sci-Fi Third Person Shooter game at the moment, I may be able to help you guys occasionally. I’ll add you on Skype and perhaps we can have a chat some time. Cheers! My portfolio: https://carbonforms.wordpress.com/
One small suggestion that might be helpful / relevant: Getting good quality animations for human characters is really important for making a nice game. I think I can see from the screenshot of your character model that it is indeed using the Epic 4.8 Mannequin Skeleton, with some additional bones for the clothing and hair etc. Have you considered using the UE4 Marketplace Motion Capture packs to animate your character?