Storage wise I'm okay. I have a NAS where I keep the bulk of my files. On my local hard drive I only keep photos since January. And I back up my NAS to a separate hard drive (both of my NAS drives failed independent of each other a year apart, but since I keep a second backup I didn't lose any data). And I clone my local hard drive about once a month or so (more often lately, and I got a brand new clone today) manually and have one of my NAS drives as Time Machine. So while I would possibly lose LR edits in a catastrophe, I am unlikely to lose major files. And I back up before I do any updates, etc.
I, too, have aging eyes, but as I've worn glasses on and off since preschool, I just live with glasses. 🙂 I've only used iMac screens since 2008. My husband has two LG monitors for his PC. I don't think they are particularly high quality and he jacks up the screen brightness so my eyes bleed when I have to use it. But that is the only non-Apple screen I have any comparison to and I definitely wouldn't want to edit on his setup. But there have been a few monitors thrown out within this thread that I would consider with a Mac Mini. Not the Apple Pro Display at $5k. I'm sure it's a great monitor, but I'm just a hobbyist. I'll look at the Eizo you linked, and I also looked at the monitors that
@Apple fanboy mentioned.
I'm warming to the idea of a Mac Mini/monitor setup but we'll see how the next week goes with my existing iMac. Has stayed on for about two hours now with the extra ram removed! (I really don't think it's the ram, but it's a good troubleshooting step.)