I’ve been using WordPress since it was forked from b2/cafepress back in 03/04, before that was MT.
I’m also the main organizer of both WordCamp Phoenix conferences in Arizona as well as the Arizona WP Meetup group.
I don’t design but I have many I work with in the WP community that I know will do a proper job. Development and implementation are done with search in mind and full on-site optimization is part of the package. If you need SEO after the fact, on and off site, we can discuss those options when we get to that point.
Technical aspects include custom anything including but never limited to site layout / information architecture, theme development, framework development and management, custom post types and taxonomies, plugin development and/or hacking, plugin setup, multisite setup, dev, etc, on-site optimization for search, and blah I’m tired, but you get it 🙂
Inquire within – be happy to help you out.