Something else to consider adding for not a lot of money is a few propane lanterns. I have 2 that I use when camping and alwys make sure I have a few extra bottles of propane.
More than once they've come in handy during power outages. Make sure that when using them indoors keep them away from flammable curtains etc and crack a window to help with ventilation.
Great wrtie-up. Has me thinking about some things I need to do.