Personally, I'd release the shorter paged stories at once, but maybe split a longer story into 2-3 episodes labeled "story title - PART 1" or something.
That way you can keep your uploading amount consistent so readers (at least on webtoons) don't bug you to make all updates that long. And it'll help space out your comic over a longer period, which tends to lead to more visibility in the long run. (Which, numbers aren't everything - but i assume if you're sharing it you want people to read it, so yeah ^^ )
Edit: tho I'm a bit unsure if you were publishing as stories like writing to tapas...or comics. I was going from a comic viewpoint since that's what the title of the thread is 