SERP Rank Tracker Wordpress Plugin Development

I need a Wordpress plugin developed that will track search engine rankings. I am going to give you an existing FREE plugin from the Wordpress Codex that I want to emulate but I want to be CLEAR, that 100% of the code in the new plugin must be unique. I do not want to copy ANY of the existing code but I Want to use it to demonstrate the functionality that I want to emulate. The plugin in question is SEO Rank Reporter. I would urge you to install it on an existing site of your own that gets some traffic so you can see how it works. I want all of the features that this plugin offers currently, plus the modifications below. Admin Settings Change: - Need a setting in admin to track Google in the various countries. For instance if a user is in Canada then they can select Google CA to track rankings on....etc. 1. All current pages need to be built and emulated as is with minor modifications. These are the basic outlines of the project, more may arise during the project, but this should get us very, very close to the final product. 1a. Rank Report Page needs to be titled Rank Tracker - This page is going to display the keywords that the site owner is actively trying to rank for. It will display keywords that have been added to the tracker. 2. I would like to add columns that shows rank in Yahoo and Bing as well as Google. This would apply to all pages that have a table displaying data. 3. Add Keywords Page needs to function very similar to existing but see notes below a. Add columns for Yahoo and Bing as well as Google so user knows which SE is sending traffic. b. Add column for google cache date c. Add column for PR of the URL on the site.