Looking for Plugin Suggestions

Hello
I am looking to build a site and want some plugin or theme suggestions (free or paid).
What i want is to set up a competition where a person signs up and pays a application fee via paypal, then can upload 2 or 3 images to a gallery. This gallery will not display until we approve the images as appropiate and then make them public. We then wantto have a voting option so people can vote for there choice. We would also like to have a template where the applicant to the competition can then upload/create a bio and maybe upload a video.

Any suggestions to themes or plugins suitable. We wantto automate as much work as possible. hence the applicant needs to beable to upload images and bio.

Thanks
Ian