Everybody has their own opinion. The weakening of Earth's magnetic field will likely occur first (already happening) leaving us vulnerable to solar flares, which we're already experiencing greater impacts from smaller flares than just a few decades ago. Research Carrington Event from the 1800s for an idea.

Think 10 years of potentially living without a grid before pole shift and micronova.

Pole shift and micronova you'll want to be underground and at elevation due to ocean sloshing.

Pole shift is of course the migrating of the magnetic poles of Earth. North Pole would be in the Indian ocean and south pole off the west coast of south America.

Micronova is the sun's violent reaction to the galactic current sheet, which evidence is piling up throughout our solar system that those changes are also already happening.

YouTube: Space Weather News

Books: The Weatherman's Guide to the Sun