Thanks for the info. I think it'd be fine there then in that case. The shelves may stick out 3.5" on each side in front of a window and door respectively, but the door opens the other way so there should be about 31" clearance for people to get through the door. Alternatively, I could probably scoot the KK over 7" and it would be off center with the left shelf mostly in front of the window, which would look a bit tacky but isn't a big deal. If I do buy, I was planning on keeping the shelves in the house when I wasn't using the KK just to try and protect the teak.
The 40" should be fine, but if it needs to be that far out from the wall it does seem like it would sort of be in the way when not in use. I could put it on the front side of the porch instead and open the lid off the porch, but I would rather it not get rained on, cover or not, when it costs that much.