Hi :) After I got a lot of feedback on my applications (thanks to all of you who took the time to give me feedback), I'm working on improving my portfolio further (https://www.artstation.com/artist/dethling). For this I'm working on my first complete environment in Unreal 4 (also improving my Unreal 4 skills at the same…
You can just build single sided geo. The main thing to consider is lighting. If there is light from behind the modules then you'll need to either apply lightblocker proxy geo or a double sided material. You might also encounter light leaks. The best thing is to do some simple tests before you commit to building the assets.