Like others have said, with a portal, you really don't need anything else, unless you plan to process metal in the field, in which case, you might want to take some workbench mats.

I don't use a portal anymore, so I take several stacks of food, usually a couple of stacks of wood, and a stack of stone to ensure I can build a quick shelter each night.

I used to carry the mats for the workbenchs and enough upgrades to fix all of my equipment. I also don't use maps, so I've gotten lost for quite some time in the past and had my equipment wear pretty thin, but that's really not practical after mistlands. You could probably fill a longship with all the different mats that are required for all the workbenches and upgrades.