Hey ,
the HK Project looks freaking amazing! Wish you guys a lot of fun and good luck for project! 
Are you using the new stationary light soft shadows as well for ? What is your approach to the lightmaps, since I noticed that you have to crank up the resolution quite a lot when using these shadows^^
I also assume you are still baking with some custom lightmass.ini settings or are you going fully unmodded time? 
Cheers!