Slider Revolution's captions.php?rev=4.3.8 file is pushing DOM Content Loaded out to around 14 seconds (on average), which means that Google's .woff files for the Web fonts you're using are not being applied until then, after DOM content is fully present. This explains some of the strange-looking loading behavior.
You have a few different options:
1.) You don't appear to actually be using Revolution Slider so you could disable it;
2.) You could stuff all of the necessary .woff files into the browser as a subresource (Chrome; "prefetch" for Firefox), thereby making those files available prior to DOM Content Loaded (assuming, of course, that the browser takes the hint). Doing this will not really improve the site's Document Complete or Fully Loaded times, but will appear to for the end user.
There are quite a few more issues, but fixing the above will do a lot.