I have done the same thing in packaging. I first built packaging hubs and then started
http://www.packagingblog.com.
Turned a bussines who used to get 3 - 4 sales a month from the internet into a biz that gets huge SEO traffic and gets 1/3rd of thier biz from the web in under 1 year.
Never paid one dime for PPC!
Check out
http://www.meanseo.com for what I can offer.