I wrote an article for Interbusiness Issues this month regarding mobile responsive website design. You can read the article here.
There are many things to consider changing your website: Costs, updating, website changes, however, these should not be concerns. Creating a mobile responsive website is my job, I do the design work, move your content and pictures and make the changes. The nice part is you can update your own website, change pictures, and even add pages.
Keep an eye out for a workshop on using these sites. Please consider updating your site to a mobile responsive design. You are missing 40% of your website visitors.