Vince,
Think long and hard about what parts will completely disable you and be un repairable in the bush.
Personally i would take:
propshaft UJs
Wheel bearings/seals/tab washers
Radiator hoses
fan belts
filters
brake pads
brake hoses
puncture kit
wiper blades
As your travelling a fair distance you may also want to think about spare shocks (1 front/1 rear) along with enough engine oil for a complete change. take a few litres of EP90, coolant, Gearbox fluid and Dot 4 also. Might be worth considering a water pump? brake vacuum pump? these are prone on 300s. Alternatively, make arrangements with your local indi who should be happy to airmail you parts to a fixed address wherever you are.
most other things can be gotten around with zipties/gaffertape/chemical metal etc. so dont forget to take all these things and anything else useful you have in your garage.
take an assortment of nuts/bolts and electric connections. maybe a spare sump plug, axle drain plug etc etc.
Most of all just make sure your 130 is well serviced. New pads/fluid, all filters, replace radiator hoses ( take yours as spares) check driveshaft condition. maybe even do all 4 hub bearings. Depends what state the vehicle is in now really.
cant think of anything else right now.
G