"Disorientation - supplies throughout thee house" - I am not sure that is a bad thing. In the event of a total or partial house collapse, some of your items will be accessible. Perhaps it would be worthwhile to organize things so that are two or three duplicate caches. Perhaps store some items away from the house.

What is the construction of your house? Frame buildings do rather well in quakes - unreinforced masonry not so well. Is your water heater fastened to studs so it won't turn over during a quake? Got big framed pictures over eds or couches? Unsecured bookcases. Where are big mirrors located? These are all concerns in EQ country.

Frankly, I plan to bug in after a quake. Basically I will be camping in my back yard (provided it is still there). Bugging out is the preferred strategy for wildfires.