I like the mini-14 as an all around rifle. Its small profile means its easy to cart around. Its not a SBR (scary black rifle) thatll make the neighbors get crazy, the ammo is relatively cheap compared to .308, and its plenty accurate for varmint hunting.
Its not what I would prefer for a total 'shit hits the fan' scenario, but I certainly wouldnt hesitate to grab a mini to deal with coyotes, and still feel comfortable that I had adequate firepower (so long as I have plenty of ammo for follow up) if presented with bigger problems.
Personally, when I have to shoot something, I only ever want to have to shoot it once. As a result, I like bigger calibers, particularly in CA where you are limited by mag size. In a SHTF scenario, there are a number of .308(7.62x51) weapons that are good quality and are much more likely to put down bigger targets, up to brown bear size, with one shot. I like the Springfield M1 best as a time honored and proven action, but there are various SBRs out there that are as good or slightly better. The .308 might not be the best round for HUGE game, but it has the advantage of being a NATO round, so you know in an economic breakdown, you are more likely to be able to get them.. Specialty big game ammo is 1, expensive, and 2, likely to go out of production in a depression.
If you are looking for a general home protection and SHTF scenario recommendation, I personally believe that you cant go wrong with the following, in this order.
12ga shotgun for defending against home invasion.
.308 rifle for defending the home against a seige and feeding the family
.45 pistol or 357mag revolver, or both, for general defensive carry
.223 rifle for keeping handy when you dont anticipate serious problems, and for general light hunting.
like I said, if I could only have one gun to do all these things, a mini-14 is a fine choice for an all around weapon.