Twitter posting app

I am looking to build an application that interfaces directly with twitter.com. This application will send post to twitter in care of the user. A few features will include: sms and email posting. No picture handling, strictly text based. This will require: - knowledge of twitter api a) finding followers by user b) then by date range c) etc... - membership database a) email address as username b) password c) twitter username d) twitter password e) device (mobile phone, etc..) f) track post history - website design and development a) home page/about (with login fields) b) account page c) post page d) administration page (no visible on front end) e) ad space placement f) clean web and simple 2.0 look g) CSS - Details a) posting will follow a default schedule b) the default schedule can be overwritten by the user via UI, email or SMS. c) posting logic must adhere to 140 char rule - sms/email a) all devices will require authorization via email notification b) email post will use the subject line c) sms post will use the message of course - schedule override a) UI "Post Now button" b) email and sms keyword: "now" - end result twitter post a) "message will be displayed on twitter" less than 5 seconds ago from "application name" - hosting will be by [login to view URL]