Hi and Welcome to the site,
Well for starters i would not get a Jimny as that would be to small for you

, anyway there is alot of selection of what you can get for that amount of money you said and you can get a pretty well set up truck aswell.
As for type of truck well each has it's pro's and con's, so I cannot say which is the best one to get because every setup is
different.
I would have a look through this site and get an idea first, there are alot of people on here that will give you good advise on what is good and what is not.
Anyway I hope you have success with finding a 4WD, also what part of N.Z are you in
Cheers
Ruben
1997 Isuzu Mu, 3.1TD, 5sp Manual.