Information Architecture

It doesn't seem like I have that many pages, just a lot of behind the scenes action taking place. The main pages are home, photos, register, pricing, and submission. I'd like users to be able to batch download, but I'm still researching that aspect (how I can bundle their images into a zip file). I need to make a list of all the php I'll be using on the site, and make sure they don't interact with each other (an issue I've had for past projects). I would like photography students to be able to customize their profile pages, but that will only happen if all my code is working... too much to do, too little time!