Tom Burnett in Bedford takes care of several of my buddies websites and we have been in preliminary talks with him on doing some e-commerce work on my company website www.harrisonindustrial.com. Send me a PM and I'll shoot you his number.
But SEO stuff isn't reallyl that tricky. I use Google Analytic (http://www.google.com/analytics/) that was recommended to me by our very own Tailchaser. It is a great and free way to monitor your website traffic.