completing a php design marketplace website(repost)

4 features are needed. 1. industry professionals directory, that contains their offer for collaboration or partnership (so editable by them) for manufacturer, graphic designer, and other professionals. 2. 'designed for brands' feature: a page that displays designs that are 'designed for brands'. This includes adding this field to the posting page so that user can input. should be searchable from search field. 3. contest feature: user can post a contest and pick a winner. 4. search feature: drop down box wanted that categorizes several category of search areas such as designs/request design/design contest/ designed for brands, next to the search field that can limit search into categorized sections. Search for all sections, by default. 5. adding purchase type option to current version: unlimited usage but not exclusive. adding field to the current version. The relevant url, that is our website is www.iyaiyao.com. Thanks.