Chaos demo

Hey I have a few issues with this demo, I tried doing everything that was said to do for versions 4.23-4.25 (Put in the two lines of code in the script and building it) but it appears that I don’t have enough space on my drive. Now while it was building it ate up what I had left (7.5 gig or so), my question is how do I get that space back? I tried deleting all the project files for that specific project and it’s still not back where it’s at. My second question is how much space will I need to build it in VS2017?