personally i would do the below prior to your trip.....and then the additional FOR your trip:
prior to: carefully check the F&R wheel bearings and belt idler pulley bearings. when they go out....which isn't common...but when they do it is virtually instantaneous. a fresh top quality battery minimum 220 CCA's a must. clean and tight battery terminal connections and grounds a must. check all engine fastener systems for tightness and visible wear. sound good appearing perishables a must. lube the clutch cable and lever perches.
for your trip: remove your fusebox cover. see your small different colored blade fuses? get 2 of each for spares. see your 3 relays? get 1 of each for a spare. they match up to common ford and chrysler a/c relays and are approx. $4 each. pack them along with the spare blade fuses in tiny plastic bag and put in either your tool kit or tape the bag to bottom front of your battery. you'll be glad you did. lastly..........ear plugs.