You can see some example plot sizes, times to plot, and working space needed based on various k's in these k size tables. Current working space needed for the default plotting options of a k=32 is 239 GiB and the final file is approximately 101.4 GiB. There is small natural variation in temp space needed and the final file size of each plot. Note that 239 GiB is 256.6 GB.
