Add the sta-bil to your gas as you said. Using the battery tender is fine. No need to keep the tires off the concrete, they will be fine. Everything on the bike is aluminum, no meed to spray it with anything.
A cover is fine or even a sheet which you can get cheap at the second hand shop. A normal motorcycle lift works fine for raising the bike but again, I wouldn't store it on the lift because it gives the bike an un needed higher chance of being knocked over. Thats about all you need to do. Can do some of the routine maintinance while you are storing it for winter like greasing the rear needle bearing, bleed the brakes, oil change, rear diff oil change.... things like that.