Hi,
Very interesting site.
I played around with your product personalization engine and it seemed to work well. I would recommend adding in the option to zoom in as it can be hard to read the text size as is.
Beyond that, it looks like you have quite a few of the SEO features that are required to effectively display and advertise your site. still, you might consider creating a simpler homepage that then directs customers clearly to the products area using a "call to action" button or similar. Keep in mind, anything after the fold is less likely to be viewed than what is initially shown upon landing on a given page. This might make navigating your site easier as your customers will always find exactly what they are looking for, but it will require a bit of a redesign.
I hope that I've been of help! Best of luck with your site!