WebPlus X6: Possible to do e-commerce site like this?

Hi there,

Someone has contacted me for an estimate to create an e-commerce site for selling t-shirts. They want visitors to be able to select color and size (doable), and then to be able to add their own text, placing it on the t-shirt on the site (doable?). Here's a site that does the same thing

I haven't created an e-commerce with db back end before so I'm also wondering if one of the pros on this site might be interested in consulting with me on this for a reasonable rate (if I get the job). If so, please private message.

Many thanks!
Luby