I would look for a 50% off coupon for MaxCDN and just follow my guide in post #57
EWD may have an affiliate link/discount code
Hands-on had one for me.
BEFORE you go with a CDN, benchmark your site.
http://www.webpagetest.org/
Then after about 24 hrs (allow caching to complete) benchmark again. Watch your page load speeds drop by 50% or more.
