Hello Greg
First of all you have very nice site:
About 416 pages of your site indexed by Google,but you don't have Blog in your site.Try to make a Blogs and keep adding new posts with fresh content by using your targeted keywords. You can do your on page SEO yourself,by following SeoMoz Campaign suggestions. Try to get back links to your new created pages and posts by submitting articles to high pr directories and blogs by pointing links to them,not only to main page.
On off page optimization,since it takes time,you can outsource to reliable link builders.You can use forums such a Warrior, Digitalpoint or others to find reliable link builders.But before chose them,check their reviews,left by others,ask for example works they have done.
