Nothing concrete to show for this week, as most of it was spent learning the ins and outs of Unreal Engine 4 through a variety of Epic-provided tutorials. Learning Unreal's BSP system has been the biggest challenge, so production of the graybox (I think that's the term Unreal users use? Us Unity people say whitebox) is slow. Adding to the production time is the aforementioned scale problems. Getting the map to just the right size has caused me to redo the basic layout many times, and I'm sure I'll be doing it more and more as I progress.
For now, expect to see a fully fleshed out graybox next week.