Appart from wedge island there are a few learner tracks at mundarring if you want to tackle those.
Keep a lookout for any trips happening here in Perth. We go out quite often to Mundarring, Brunswick Junction and Dewllingup.
You might want to at LEAST get 31" tyres before you start doing anything more intense and also a 1" Body Lift. Be aware that your insurance company may not like you after these mods. It all depends on how serious you are and how far you want to take your JEEP.
Byt the way...congrats on the purchase of a great 4wd