OSCommerce Addon Help

We operate a printing company currently running OsC. In addition we are currently running SEO-G to help with rewriting our urls. We want to go a step further and expand the number of urls on the website So important aspect of our business is that we focus on a few particular cities,mostly large metropolitan areas such as Houston, Boston, New York, etc etc We simply don't want to edit or create one product url but rather create several new ones. So currently in our add-on on OsC we are using SEO-G, currently we can edit only (1) 11 X 17 url but we wanted to go a step further and duplicate certain url's so an example would be 11 X 17 ( see below) [login to view URL] [login to view URL] [login to view URL] They would be a copy of the main default 11 X 17 page. So on these pages can change the content and copy so we can then market these urls for those particular cities. In addition this way can edit Meta and Title Data Page structure as well. What are your thoughts on making this happen? I know this sounds pretty complex but i think if you think about we can easily duplicate the existing product item list. We can try with 1 city first so we can see which might the best way to move forward