I am using cloudflare, W3 Total Cache, and amazon s3. I am using database, page, object, and browser caching via W3TC.
What causes the delay in receiving data from the server as seen here? This is incredible, I feel it might have been faster without W3TC installed.
Screenshot of headers
A couple of thoughts.
It looks to me like there are two 404s on the home page, so probably good to get them fixed:
http://cdn.thedigitalhippies.com/wp-content/themes/sahifa/fonts/BebasNeue-webfont.woff
http://cdn.thedigitalhippies.com/wp-content/themes/sahifa/fonts/BebasNeue-webfont.eot?
There are 20 odd CSS files on the page and plenty of js files. I think you would get good improvement if you combined and minified these into single CSS and JS files with somthing like http://wordpress.org/extend/plugins/wp-minify/
Hope this helps!