Competitiveness Keyword API Tool

I am looking to have a tool built that pulls in some API's and displays stuff in graphs on a page. Alot of what is already out there is done using google docs. I want something more modular that clients that pay a certain amount get a certain report and others get more. So. Inputs:- Domain : Page : URL : Keyword list (Say <100 keywords) Outputs:- - List of competitors based on top 10 search results for each keyword (Cross referenced with all keywords). - Keyword search volumes from adwords API - Domain Rankings - Cometitor Page Authority - Domain Authority - Link Data - Give an overview of difficulty for each keyword in a graph. I'd also say that the SEOMoz API appears to be the best way to extract the information, but ultimately up to you if you know of anything better.