Welcome to MySwag Spence. If you live in one of the bigger cities, use gumtree and have a good look around at the second hand market to see what $6000 will buy. There are plenty of CT's for sale it is just a matter of looking around at what they have to offer. You need to decide on a couple of things. Big tent and annexe area or average size. Fittings to carry fuel, gas bottles, generators? Do you want a quick setup time or doesn't it matter. Do you want a modern slide out kitchen and stove for the Mrs or will a gas hot plate suffice. Couple of things to think about mate.
See you around the forum. Muz.