NOP commerce setup

We're using NOP Commerce store http://mckayflooring.azurewebsites.net/shop/

We don't actually need a store now, but like the store idea that people can browse products and see more info, browse images etc.

We'd ideally like something that plugs into the site rather that having this external NOP commerce setup.

Any suggestions for retaining the general look, feel and structure that this NOP store provides using WPMU plugin?