I'll challenge myself. If I could only own 2 - yep, count em - 2, I'd take the following in order of preference:
1) Rem 870P
2) Kahr K9 (sorry, that
specific pistol is not on your list, but the brand is, & it's what i've got
)
Those two I can carry comfortably with a bug out backpack of 45#, and still make good time into the high country on foot.
With the 870, I've got: A) #1 buck that will stop virtually any aggressor wishing to take my life; B) slugs for larger game; C) bird shot for smaller game. It offers both food & superior protection. Nothing this side of .50 stops like a 12 ga.
With the K9, I've got short range (<20 yd) CCW protection with which I can comfortably produce 6" groups of 124 gr. projectiles at 7 yds.
Then, if I can just find water, stay warm & dry, then I'm good to go.
If I've got transportation beyond my feet & a backpack (somewhere between a BOB bike trailer & a pickup), I'll also take a rifle, but can't say yet which one. (My last one was a Rem .35 lever action, which i totally loved. So sorry I let it go.)
Of course, those ARs ARe sexy...