Need suggestions for camping locations

Hey guys, I just recently joined this forum and I'm planning a camp at the start of January next year for about 16, 18-19 year olds, this year we went to mount tambourine for 5 days and camped there which was a great time and I am looking for places similar, near South East Queensland, with a a maximum distance of about 3 hours from Brisbane. We have 4x4's so off roading is possible, but the main criteria for places I'm looking for is the ability to have a fire, open fires is a bonus, electricity would be preferred but not essential, within 20 minutes of a town to be able to pick up supplies etc., And the ability to fill up 6 days worth of activities, half of the group isn't into hiking so somewhere that's not hiking focused would be good, we all have tents so having a camping site for tents is a must, I am looking at teewah beach for some beachside camping, with some 4x4ing and exploring up north, any suggestions would be appreciated, many thanks Morgan