Those minimum specs listed look very Bare Minimum, to me. uhh...
8 gigs storage?
You can install and run Zorin OS lite and do light web browsing on that. But it running and you using it may be different things. StarTrekker stated a size for comfortable running. When I install a new copy of Zorin Lite, I then also install applications that I use that do not come with Lite. By the time I have finished, I am usually at 10 gigs or a little over.
And this does not even cover files that build up over time. From photos to downloads to system logs.
If you have an external drive- then you can use that as storage, such as setting all downloads to go automatically to the external drive instead of ~/Downloads.
You will also want to be diligent with maintenance, running "sudo apt clean" and "sudo apt autoremove" pretty often, as well as clearing out System Logs more often than the average user.
Oh yes, you can reinstall Zorin Lite, no problem. But, if Zorin Lite is a little heavy at those specs, I would certainly not consider Windows as an alternative. A better option may be a Tiny Linux. Here is a list including SliTaz, Puppy, Bodhi, Porteus and others.