Those pages are pretty short, but you're doing it on purpose to fit the style of story you're going for so its probably fine?
But really you should just write what you want and hit the publish button. If the story sucks, you'll get useful info about why in the comments and that can be used to improve the next one. My first story was less than 3000 words and taken down in less than a day...I felt bad about it at first, but that's pretty normal from what I've seen and nobody holds it against you. There are people here who are just such incredibly good writers it sets everyone elses expectations really high, but there's still room for people who are learning, and I like that there are standards here. It means that if people say something you write is good than you KNOW it's good because it's not something they'll lie about to spare your feelings like in other places.