Is this a wish list or a need list?
If its a need list then IMO the first thing you want is an ARB rear locker. 120series prados suffer badly from self destructing rear diffs and user error is not the cause.
The locker will lessen the chance of it breaking (check out pradopoint.com).
Whats your std suspension like? If its fine then leave it.
Seriously, std suspension with a locker will outperform aftermarket suspension without one. The Toyota's LSD is crap.
Add in some skid plates to protect the engine and trans, some good all terrain tyres, a tirfor winch, a water crossing recovery blind and basic recovery gear.
Bump your insurance up to cover accommodation/transport etc if you do hit a bull and disable the vehicle.
So thats what you would NEED imo.
Now if its a WISH list then grab an ARB catalogue for accessories and ring Darren McRae at Autocraft for your bilsteins suspension package.
You will love your Prado. And just, or maybe more, as important they make a great daily driver.