I just went through this whole ordeal when setting up my computer. At first I put everything on my SSD C drive, which was the same size. It filled up really quick, and my whole PC was running slower.
I ended up moving all my docs & my sims game to my 1 TB hhd. My sims game immediately ran faster. It was kinda a pain to set up because I originally set my documents to merge with OneDrive, so I ended up having to do a factory reset and set the files to save only on the PC. But hey it works great now.
As for @LadyEve I’d say the 2nd computer w/ an i7 processor sounds better at first glance. Especially if it has 4 tb on the hhd. 4 tb sounds like way more space than you’ll need. I’m not 100% sure of the quality for the 1st computer, but the 3rd computer seems to be weaker than the 2nd. I’d only consider the 3rd if it’s significantly cheaper and you’re on a budget.