Combine Scripts

I would like a somewhat clone script of shadowness.com. An art community with the ability for users to create their own blog/art showcase and have the site automatically index their work into catagorys they put them in. I have a few scripts that can be combined... such as blog host, search engines, user authentication, etc. I need all of this done in PHP. A list of what exactly needs to be done. 1) Account Creation 2) User Art Showcase/Blog 3) Indexing of all user posted images/PSD/brushes into subcatagorys premade (by me). For Example - The user uploads an image...he selects what catagory it will go into and the site itself indexes it into a browse field for people to look thru. 4) Image/PSD/Brush Upload with the ability to limit file size. 5) Search 6) Front Page With Login, News, Etc. (No graphics i can do that much) 7) Paid Membership Option. 8) Ad Support such as ex. Google Adsense. 9) Popular Artists Block for Main Page. This should not be a rough task for anyone with high knowledge of PHP and databasing. I dont mind if you combine scripts so long as its legit.