It won't hurt anything to sanitize it and dry it before you store it I usually skip the step with fermenters after cleaning but I always sanitize kegs after cleaning and before filling.
Ditto... with one caveat, if there's stainless steel you're storing don't leave any dollops of sanitizer on it. The acid can take a layer of your steel off.
I have some yeast residue still stuck in my auto siphon... Is this going to come back to haunt me? I tried to get it clean with oxyclean. I've had good luck with this. (You have to rince very well though.)
I use to wash, sanitize, bag, store, rewash, sanitize, use.
The reason I store cleaned and dry is, I don't like storing items with the residue/film that Starsan leaves behind, possibly collecting dust or any other unruly little critters that might be floating around, and after a few days Im pretty sure that the dried sanitizer is worthless for protecting your equipment, so its just a waste of time, someone with documented proof correct me if Im wrong about that, Id be very interested. just my 2 cents.
I clean everything hot side and sanitize the carboys and 2' of 1/2" hose going out the plate chiller. The plate chiller is pressure canned. And I sanitize the kegs. Their is no point sanitizing hot side stuff, the boil will take care of it.