Customize Wordpress Plugin for front end

I want some customization to WP Document Revisions plugin [login to view URL] I already have a customized version of it for admin work. The code will be provided to winning bidder. I need it to customize at front end so that it can search documents with some specific fields. Description: --------------- DOCUMENT MANAGEMENT At the heart of the system is the document management functionality. This will store and index the documents that have been uploaded and retrieve for display. Where possible, meta data will be extracted from the documents (eg author, title etc) SEARCH FUNCTIONALITY The primary method of navigating and discovering documents will be via the Search functionality. The site must have full search functionality built in from the start. Search will operate on 5 key parameters: ? Title ? Date ? Author ? Organisation/entity - A custom field for document ? Location or word Please apply if you have strong wordpress experience for quick turn around. Feel free to ask any question. It is maximum 2 hours work someone who knows how to create/modify wordpress plugin. Happy Bidding. P.S. I have tight budget and deadline right now. Successful candidate will have more work in future.