Capacity for SSD: System / Working

[PanGrns]

System SSD:
I will install: Win 10 pro / Adobe Illustrator, Photoshop, Indesign / Blender.

Working SSD
Working file & Export pdf/images

Storage
I will use a 4T HD

BackUp
External HD


How much strorage do I need, in each case?

 

[HardReset]

System: Around 500GB should be enough
Working: Around 1TB? (depends on files)
Backup: Depends