Recommendations + implementation bid for improving Organic SEO results on google.com (USA)

Hi there, I am looking for a top SEO expert to help me with improving search results in the US. - domain: [login to view URL] (WP) - current traffic: approx 2.2K sessions / day The site is currently ranked 4th-20th on various search amino acid related terms. However, we now want to beat the competition on search terms such as +amino +acids, +amino +acid, +arginine, +l-arginine (in combination with impotence, erectile dysfunction, male fertility). Please provide recommendations and a proposal on how to build traffic on this side gradually and sustainably. Minimum areas you should cover are content, layout, design and navigation. Please cover both on- and off-page. NB - ONLY white hat, sustainable recommendations compatible with the latest google algo updates allowed! Absolutely no grey or black hat techniques! Please include 2-3 examples of your previous work in your bid. I run a lot of sites and would like to find a long-term, professional SEO partner. Please start your bid with the words "I HAVE READ YOUR BRIEF" or it will not be considered.