When you're ready to upgrade to a responsive website, remember to start with your mobile design first. This progressive enhancement approach lets you plan for content and features in your wide format computer version, where greater bandwidth, increased mouse precision and enhanced technologies can be put to good use. 

When you begin with the limitations of a mobile site, your site gets stripped down to the essentials and your full featured version will be leaner and all the better for having gone through this process in a progressive manner.