Australia....
Your in Australia where the climate is a little less punishment on them, than in the U.S. where the extreme changes cause moisture to build up. That's the "enemy" of sitting around.
Taking all the normal precautions should be fine. Disconnect and remove the battery, but before you do, there is something I'd do. Buy a spray can of Lithium grease. It's an excellent insulator and will keep any moisture at bay. It also puts a coating on all metal surfaces that are in contact with each other. Spray everything down with this spray. Squirt a dab in the spark plug holes and roll the engine over while giving another squirt. Then, put the plugs back in.
Lithium grease is what most engine builders use to protect the metal to metal parts in an engine during a build or storage job.
Good luck!................:cheers: