oscommerce quickcheckout

website ---> [login to view URL] we have a standar oscommerce store. We want implement a quickcheckout plugin on the site. On the web exist more than one plugin for do checkout in 2 or 3 steps.. Also we want to add some fields to checkout process, this information entered on these fields must appear on the order. Basically the job is implement a quickcheckout plugin and add the fields to checkout. we are looking someone that work fast and begin inmediatly. Also let us know which type of plugin will be implemented