I don't believe you will go wrong by using stickers on dried lumber. That said, I probably have a couple thousand bd ft, both air dried and kiln dried, stacked in my basement w/o stickers. When I start a project I pull out the boards I will use and stack these on a couple of saw horses, letting it sit there for a few days to acclimate. The amount I'm using is seldom more than 1-2 layers deep on the horses, so it gets plenty of air circulation.
For anything that isn't well dried as a first step, ALWAYS use stickers.
FWIW, I don't like to plane before I'm ready to start. You'll probably just have to plane again unless you are using it relatively soon. I started out doing this and realized I was dulling my planer blades for not much gain. Now, I leave it rough and cut it to size before planing. Even with well-seasoned lumber a board can have a lot of internal tension that gets released when you cut it to size. This can take the form of warping or cupping, so you have to flatten one side and re-plane. By deferring the planing I'm ensuring flat lumber, minimum waste, only planing the least amount, avoiding knots, etc. Just my two cents.