Its hard to get by on 1/5 TB for sure. Tip: Buy cheap external drive. Try to purge Documentation + Source folders from all engine installs too (assuming you can live without those). Old plugins eat space as well. Plus purge all DDC folders, and let UE re-build shaders. DDC folders never get cleaned out. Often they’re full of bloat from MP packs you don’t even remember anymore. 
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