Wordpress login via google facebook twitter API

Hi there, We are trying to create login profile system via Google API, Facebook API and Twitter API for Wordpress site for the following reasons. 1: for user to leave a comment 2: for user to display and complete their profile similar to [login to view URL] (do test registration) and go here [login to view URL] as it will ask you to complete your profile 4 steps with similar features. We need exactly that using again, google login api, facebook login app and twitter login api. Please, we need someone who is experienced ONLY and give us approximate time to complete this. Write 2 as "word" above your message so in know its not automated response by spider. Thanks!