Joomla 2.5.6 development

I'm a developer by profession. Since last three years I have been running my own websites using vBulletin, XenForo and Wordpress, as well as I do freelancing full time. My work fields are based on vBUlletin, Wordpress, XenForo, HTML, XHTML, CSS and PSD to HTML & Wordpress conversion! I always try to provide a best service at best cost! I have a website www.poemsharing.com. this is Joomla 2.5.6 I want users to be able to choose from a range of pdf Templates. an example of which is attached. enter a personal message along with a to and from name. I need a date and a time to be entered onto the pdf. I then need the user to be able to choose from a list of poems and have this enetered into the pdf. along with the poem title and the poets name. I need the user to be able to check the pdf and make any alterations necessary. I need them to be able to check out and pay for the poem as well as enter a delivery address. All the usual order alerts need to be in place such as despatched etc. I dont mind which cart we use but the page must be customised to fit the site CSS and the cart needs to be free I need the ability to be able to add further pdf templates as I want them. The whole thing needs to be in keeping with the look and feel of the site I need to be able to print off the finished pdf as well as the delivery address for the envelope