Stuff I would bring....
Cash.
Phone.
Duct tape.
Spare Belts.
Coolant.
Fuel.
Oils.
Fuel injector or two.
Hoses (including the little injector return hose).
Some spare wire and electrical tape.
Spare tires.
A real floor jack.
Jumper cables.
Tools, including a full set of sockets and end wrenches, screwdrivers, stuff to swap an injector, multimeter, pliers etc.
Things I would do before I leave...
Check wheel bearings for play.
Replace the oil cooler hoses if they have not been replaced in recent history.
Grease everything you can grease.
Check u-bolts/ spring hangers/ crossmembers/ drivetrain fasteners tight.
Change the oil in everything (& transmission filter)
Check and or replace every rubber hose (brake hoses too)
Make sure your fuel system is in decent shape.
Check your brakes.
Prove your cooling system.
Have decent batteries.
If you are planning on traveling soon you will be on the road during the warmest part of the year. The Siskiyous on I5 are no joke, it is the highest elevation pass on I5 period (Higer than the Coquihalla in Canada) And it is in southern Oregon where the temperature will be hot.
Don't know what kind of food you like, but I can suggest a few. None of these places are spendy, all are good in my book.
Hayward CA....
BBQ. Everett and Jones BBQ 296 A Street Hayward CA. (BBQ in the hood, order through bulletproof glass. Beef links are unmatched anywhere, this place is worth a detour IMHO)
Sacramento CA...
Korean. Koreana Plaza 10971 Olson Dr Rancho Cordova CA. (Crazy Korean food court inside)
Redding California...
Burgers. Damburger 1320 Placer Street Redding CA (odd press fried burgers)
Medford Oregon...
Burgers / Cafe. Jasper's Cafe. 2739 N Pacific Hwy Medford OR (Really good cafe food)
Portland Oregon...
Food truck heaven (40 plus food trucks in one city block) Corner of SW 9th Ave and SW Alder St. Portland Or. You can find anything in one city block. (This place is insane, only the good food trucks survive) It is one entire city block of vendors plus a corner of an adjacent block.
Seattle Washington...
Bar food & Cask & Trotter 711 Westlake Ave N Seattle WA. (Bar food done right)