Changes to Wordpress Plugin

I want to make changes to the attached Wordpress SEO Plugin: - I need to have the ability to change meta description tags for the Category pages. - I need to have the ability to change the meta keywords for all pages (posts and categories). Currently, you can change the meta keywords for the home page. But, I want to be able to do so for the category pages and the post pages. - I need longer meta descriptions for the home page. I am really concerned about having the ability to make broad changes to all posts and categories by including elements in the wordpress admin panel like "%category%" or "%page title%" like you can see in the plugin already for other fields. So, really, I am just talking about adding a few fields of information to the plug-in. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform PHP/MYSQL