Yep +1 on the amazing wife thing.
PLB has to be top of your list $400ish
Pack second as you need to be able to carry 3 days worth of gear and all that lovely venison comfortably. Go 75 litre. Macpac has a sale on $500ish.
GPS is $500 - $1000 new depending on features but topomaps on your phone is pretty good except in really shit weather cos of touch screen.
Walkies are a bit of luxury but heard the rhinos are pretty good.
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