Vehicle Choice. Hilux

This is another question for advice.
Have posted 2 already and after all the great response we had from the last question’s and talking to people we are looking at a strong Ute type of vehicle. For a 6-12 month trip around Australia.

We definitely don’t want to take our VW golf, as it is too small and will get shaken apart on unsealed roads. If we did take it we would have to tow a trailer or get a Pod for the roof for extra room. Would restrict us going into National Parks and if it breaks then servicing and parts could be a problem. Stop me if I am on the wrong track here.

Funds are the problem.
A good 4x4 seems to be out of out price range with the buying value and running costs. We do enjoy some of the off the beaten track type camping but not keen to cross rivers and drive up mountain slopes. Have spent some time in Kakadu (on a tour) and places like Jervis Bay and South NSW coast National Parks.
Thinking a Hilux with canopy/closed in back could be the best option.
They are strong and will solve our space problem.
They do come also as 4x4 but think this could pose more problems than solve re more moving parts and fuel economy.

Our budget is around $3,000-$6,000 depending on rego, tyres etc.
Anyone have any advise about what engine to go for, problems to look out for, model that is a good. Diesel (good economy unless it breaks) or Petrol.
The one thing that I do love about my VW Golf for long long journeys is the Cruise Control. Good for fuel economy and less to concentrate on. Do any come with this.

Hope you can help.