Hey Jeff,
The sites like Printroom are best used as an ancillary service. You can help make their system match your already existing template. I would not use it as a primary website. Its purpose is to be an engine to sell photographs - and that is it. To me, that is only one piece of a website (though obviously an important one).
The current site that you have is quite nice for a pre-fab. It has a very good look to it. However, if you find updating the site difficult, perhaps you should look at having one custome built for you (particularly if it is for professional purposes).
Cheers!
James