A little drop of upper cylinder lubricant in the plug holes is a good idea to stop the rings cold weilding - and as others have said - disconnect battery and keep warm - protect the tyres - bung the exhaust and cover it up.

The redex will make it smoke like billio the first time you start it, but not for long - better than damaging the bore.

Of course - the best way is to ride it a just a couple of miles every week or so