Try to get everything you will need and more...

Computer and complete harness, fuel tank and lines, cluster and OD switch (along with other switches), shift linkage and cooling lines, driveshaft, engine mounts and trans mount/crossmember, exhaust past converter, cruise control if equipped, you get the idea.

The best bet is to keep the truck around until the wagon is running, but if you gotta strip it, get EVERYTHING you might want and extras in case you need that small part or for trading material.
It sounds like you don't have long-term storage, so between removing what you want and selling off other parts, it should look like this before it's hauled off.