A bike stand will still load the suspension, unless you get a sterring stem attachment for the front. It will help the tires a bit though. store the bike on stands out of sun light would be best. There is not realy a good way to store long term in a humid enviroment. Best for the bike would be to drain the tank and run till it shuts off, if you live in a dry climate, like Arizona or Co. but in a humid enviroment you can get condinsation inside the tank. The ideal solution would be to leave it in the care of some one you could trust to periodicley take it out warm it up and go for a little ride around the block. But then that is another whole can of worms.
Additives will normaly only get you by for a couple of months (winter storage) if that. pump gas has so many thing in it now other than gasoline that it degrades fairly quickly. So long term storage can be problematic. In the end it will be a judgment call, but hopfully this will give you some things to think about for when you do store it, to find the best way possible for you.
CBR929-jardine race can, down 1, polished frame and swing arm,wheels polished, HELI bars, Sargent seat, Puig racing screen