Ironshaolin, Enter the Dragon my friend!
This is what I've researched and would do I your situation. Your needs may be different. I'll go point by point.

Water even with strict ration 1 gallon a day per adult. For drinking/cooking, Not including washing/waste disposal. If you run out you will be forced to go forage for it at great risk ( this also puts your family at risk.) And then you MUST TREAT WHAT YOU FIND. I suggest chlorine, iodine best is Polar Pure now hard to find or a top quality water filter.

Lap top battery almost dead more later.