I'd leave it at my good friend Pushr0d's house, with a tankful of gas!
Seriously, there was a thread on this recently. To sum up, full tank of gas with Stabil, battery tender (of some brand or other) and put the bike up on the c-stand, maybe jack and block the front to get the load off the front tire. Throw a cat-proof cover over it.
Oh, and give it a good cleaning before you leave it.
Depending on how long you are going to store it, you might want to remover the spark plugs and pick up some marine fogger, its basically a fogging oil that you sparay into the cyclinders for winterizing maring engines.
turn the engine over a couple times to get the oil coated in the cylinders and replace the plugs.
You will probably have a little white smoke when you strt it again after storage, but its just the oil burning out of the cylinders.
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