As far as my captions go, I do them in blocks of eight or so at a time. I have a stockpile of around 100-120 photos that I *like* at any given time, and through various methods that I switch up on occasion, I usually whittle those down into twelve-ish pairs or triplets which I think would make interest stories or captions. Sometimes I get photo submissions, and those usually get lumped in with the collection, unless they arrived paired together with a story idea already attached, in which case I’ll use them together as a ready made pair. Of those twelve sets, I usually dislike four or five enough to scrap them, and I write the rest, and then cue them up for the next week. the entire process probably takes…four to five hours or so.
As for longer stories, I write those whenever I’m not writing captions, polish them a lot, and then publish them when I feel they’re “finished”.