SEO - Earth Moving Equipment Site

Hi, I need to optimized one of my sites for search engines. If it is done well I have many other sites for which I will repeat the same. My requirement: 1. Suggest and improve the design as per SEO requirements 2. Add proper meta tags, keywords, 3. Submit to various search engines. 4. provision for me to add/remove keywords I dont want to spend too much (my preference is $30-$40) on this single one as i am looking for a long term job of similar kind for my other websites too. regards, Roopesh