Extremely long ttfb for wordpress site

[ssff]

I realize this is topic has been discussed a lot, sorry if I annoy anyone. I have read many of the posts related to this and I have tried many.
I am experiencing a almost a 20sec ttfb in my test results

http://www.webpagetest.org/result/130514...1/details/

I have tried analyising my plug-ins with P3 plugin analyser, deleting old revisions and optimizing my database, compressed images with smushIt, changed memory_limit in the wp-config file to 256MB.
I am running the current version of WP and my plugins and theme are current versions. I have a fairly small site (110 posts) image heavy though.
I also am using cloudflare instead of my Network Solutions server.
My cache is WP-Supercache. I switched from W3TC because of another posts recommendation.
My technical ability with this stuff is pretty thin, any guidance or suggestions would be very appreciated.
Thanks