Ditto for the AR. I imagine most of us would be working at 150 yards or less 99%+ of the time.
As for the AK, I'm not putting $$$ into optics for a rifle that is not designed for sniper distances. For an AK at 100 yards you better be just as good with iron as with optics or you're not practicing.
My suggestion to someone that is fixed on optics, take a couple of Appleseeds. It will teach you / show you that for a civilian in real world SHTF, iron is a lot more effective than you think.
One "prep" measure that I undertook back in 2009 was Lasik surgery. I didn't like the idea of being utterly dependent on prescription eyeglasses on the road ahead. Now, Lasik doesn't fix the near point accommodation problems that arise with age, so I still need reading glasses (which as not as big a concern).
I'm still okay with iron sights on handguns, or on rifles where the rear sight is a leaf type in front of the receiver. Rifles with aperture sights mounted further to the rear - those can be a problem for me now. Sure, I can use those optical doodads that attach to my shooting glasses, but that's not practical.
Hmm... does anyone make a "V" type rear sight for the AR? I think there's an HK style rotary drum rear sight - maybe that would work if I scooted it forward on the rail a bit.