XML Conversion?

I have thought of a project involving 3 people group (including me).
The basic idea is that we will be building an application in which the user will be able to convert the data into text or pdf or html form. For this we will use XSL-FO ( of course if anything else is to be inlucded it will be done).Apart from this...I am thinking to add some SVG part to it also.
In this case if there's any numerical data in the HTML form or is supplied separately to the application then it should be converted it into graphical (ex: graph) form thereby making data presentation much cleaner.
My doubt ...how complicated is this project will be or what more add-ons I can consider adding in this?
I have to do this project for my university and it should sound that the project is worth of 3 people doing it?
Please suggest.
If you have any other project ideas..they are welcome.