Convert Web Site from Shift4shop (formally 3dcart) to Big Commerce

So Shift4shop is just not living up to its promises. I am looking for someone to take my site and move it to Big Commerce. Shift4shop is raising their pricing by 20% and they lack many features offered by Big Commerce. I need someone to move my site in its entirety to big commerce. Including customers, orders, etc... We would like the same look, feel, and function. Here is our website: [login to view URL] We would like to get this done within a month