Yeah lots involved. Probably best off selling it and buying another one when you are back.
However, if you are adamant you want to store it, then get one of the breathable car covers to keep it under, I'd give it a full body wax to protect it also.
I'd also leave the car up on bricks so the tires don't get flat spots, and I'd be tempted to deflate the tires too, so they don't get stretched.
engine wise I'd leave the oil in there, and I'd leave a few drops of oil in the cylinder bores. I'd disconnect the battery also, purely because it will get discharged in those 7 months anyway, so you might as well remove it so it's still got charge in it when you are back.