Hey supertramp,.
You can go to Bluewater and head up Forestry rd, Road turned to dirt and heads uphill supposedly goes to Paluma. I think only motorbikes can make it that far, but you can get 50 km and a couple of creek crossing in. Another area is up Harvey’s range area, around keelbottom Creek. Some good tracks and camping in the area. Just stay out of the military training areas. Ollera creek ( in the dry), rougher track,washouts takes you to the beach. You can go beach driving at Cungulla and good fishing there.
There are a few 4wd clubs around to ask if your new to the area.
Enjoy