If you get one.
Make sure you have two keys that the fobs work, or get a spare one ASAP. Also make sure you have the EKA code.
Also worth finding someone locally who has a nanocom and making friends.
Regarding working on them, expect lots of rusted together bolts and nuts. But this is to be expected on a 16 year old motor.
As already said, check the rear of the chassis / check ACE if fitted, if removed then check it was done correctly / If it has suspension airbags, then operate it to see it working correctly, press the dash button to raise it up / If Central Diff Lock fitted then make sure it engages, but it may not be fitted.
Finally , make sure you know what dash lights should light up and make sure they all light up when the ingnition is turned on for the self test, to make sure some rascal has not removed the bulb or taped over them.
Cheers